Best Keto Chicken and Broccoli Casserole Recipe You’ll Ever Try

Looking for a hearty, low-carb comfort meal that doesn’t compromise on flavor? This keto chicken and broccoli casserole checks all the boxes. It’s rich, creamy, cheesy, and packed with nutritious ingredients that align with your ketogenic lifestyle. Whether you’re meal prepping for the week or whipping up a quick family dinner, this casserole is a crowd-pleaser.

In this article, you’ll discover everything you need to know about making the ultimate keto chicken and broccoli casserole, from picking the right ingredients and variations, to cooking tips, storing leftovers, and avoiding common mistakes. You’ll also find dairy-free alternatives, Instant Pot options, and even tips on freezing your casserole for later.

Why Keto Chicken and Broccoli Casserole Is the Perfect Low-Carb Meal

What Makes a Casserole “Keto”?

Unlike traditional casseroles filled with pasta, potatoes, or rice, a keto-friendly version replaces the carbs with wholesome, fat-rich ingredients. A well-prepared keto chicken and broccoli casserole focuses on high-fat dairy, low-carb veggies, and quality protein sources—perfect for staying in ketosis.

This dish eliminates processed carbs and swaps them for nutrient-dense ingredients. It’s hearty, delicious, and ideal for anyone following a ketogenic lifestyle. Plus, it’s easy to make and satisfies cravings without kicking you out of ketosis.

Nutritional Benefits of Chicken and Broccoli

If you’re a fan of creative keto twists, check out our Keto Chicken Nuggets—they’re kid-friendly and great for snacks or meal prep.

The secret to why this casserole works so well lies in the two star ingredients: chicken and broccoli.

Chicken provides lean protein that supports muscle health and keeps hunger at bay. Broccoli brings important micronutrients and fiber to aid digestion and immune health. When combined in a creamy, cheesy base, they form a filling, balanced meal that’s ideal for keto eaters.

A warm serving of keto chicken and broccoli casserole not only fuels your body but also satisfies your taste buds without guilt.

Choosing the Right Ingredients for Your Keto Chicken and Broccoli Casserole

Keto Chicken and Broccoli Casserole

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• Author: Hearthy meals
• Total Time: 40 minutes
• Yield: 4–6 servings 1x
• Diet: Low Lactose

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Description

This keto chicken and broccoli casserole is a creamy, cheesy, low-carb comfort food perfect for weeknight dinners, meal prepping, or a quick, satisfying family meal. It’s packed with protein, loaded with healthy fats, and low in carbohydrates. Even better—it’s freezer-friendly and easy to adapt for various dietary needs.

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Ingredients

Scale 1x2x3x

2 cups cooked shredded chicken (rotisserie or baked)

2 cups fresh broccoli florets (lightly steamed)

1 tablespoon olive oil

3 cloves garlic (minced)

4 ounces cream cheese (softened)

1/2 cup heavy cream

1 teaspoon Dijon mustard

1/2 teaspoon salt

1/4 teaspoon black pepper

1/2 teaspoon smoked paprika

1 cup shredded sharp cheddar cheese

1/4 cup grated Parmesan cheese (for topping)

Optional: pinch of red pepper flakes, chopped parsley for garnish

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Instructions

• Preheat your oven to 375°F (190°C). Lightly grease a medium-sized baking dish.

• In a skillet over medium heat, add olive oil and sauté garlic for 1 minute until fragrant.

• Add the cream cheese, heavy cream, Dijon mustard, salt, pepper, and paprika. Stir until smooth and creamy.

• Remove from heat and fold in the shredded chicken and steamed broccoli. Mix until everything is coated in the sauce.

• Pour the mixture into the prepared baking dish. Sprinkle cheddar cheese evenly over the top, followed by Parmesan.

• Bake uncovered for 20–25 minutes or until bubbly and golden brown on top.

• Let it rest for 5 minutes before serving. Garnish with chopped parsley if desired.

Notes

You can use frozen broccoli—just thaw and drain well before use.

For extra spice, add jalapeños or a dash of cayenne pepper.

Swap cheddar with mozzarella, Gruyère, or pepper jack for different flavor profiles.

Store leftovers in an airtight container in the fridge for up to 3 days.

This recipe is freezer-friendly before or after baking. Reheat from thawed in a 350°F oven.

• Prep Time: 15 minutes
• Cook Time: 25 minutes
• Category: Main Dish
• Method: Baking
• Cuisine: American

Nutrition

• Serving Size: 1 portion (1/6 of the casserole)
• Calories: 345
• Sugar: 1g
• Sodium: 420mg
• Fat: 26g
• Saturated Fat: 12g
• Unsaturated Fat: 12g
• Trans Fat: 0g
• Carbohydrates: 6g
• Fiber: 2g
• Protein: 24g
• Cholesterol: 95mg

Keywords: keto chicken casserole, low carb dinner, gluten free recipe, cheesy chicken and broccoli, keto casserole bake, healthy comfort food, keto meal prep, oven chicken recipe

Best Types of Chicken for Flavor and Fat Content

When it comes to building the perfect keto chicken and broccoli casserole, the type of chicken you choose makes a big difference in both taste and fat content—two important aspects of a successful keto meal.

For maximum richness and flavor, boneless skinless chicken thighs are a great choice. They provide more fat, which helps you stay in ketosis longer and adds depth to the casserole’s flavor. However, if you prefer a lighter option, chicken breasts can still work well—just be careful not to overcook them.

Leftover or pre-cooked chicken like rotisserie meat can also save prep time and still deliver incredible taste.

Fresh vs. Frozen Broccoli: What’s Better?

This debate is common in the keto cooking world: Should you use fresh or frozen broccoli in your keto chicken and broccoli casserole?

Fresh broccoli:

• Offers a firmer texture
• Holds up better during baking
• Tastes slightly sweeter

Frozen broccoli:

• Convenient and cost-effective
• Works well if thawed and drained properly
• Slightly softer texture after cooking

If time and convenience are top priorities, frozen broccoli is a solid choice. Just be sure to drain off any excess water before mixing it into your casserole to prevent it from becoming watery.

For the best texture and taste, however, fresh broccoli florets are ideal—they keep a little crunch, even after baking, and add a fresh contrast to the creamy base.

Whether you opt for fresh or frozen, both versions help keep carbs low while adding nutrients and vibrant color to your casserole.

Cheese Choices That Elevate Flavor Without Breaking Keto

Top Keto-Friendly Cheeses to Use

Cheese is one of the cornerstones of a delicious keto chicken and broccoli casserole. It adds richness, creaminess, and that comforting stretch you crave. But not all cheeses are created equal on a keto diet.

Here are some top keto-approved cheese choices, ranked by fat content and flavor impact:

• Sharp cheddar adds a bold flavor that balances out the mildness of chicken and broccoli.
• Cream cheese creates a luscious, smooth sauce that ties the casserole together.
• Mozzarella delivers a gooey texture without overwhelming the other ingredients.
• Parmesan adds a golden crust when sprinkled on top before baking.

All of these cheeses are naturally low in carbs and rich in fat, which is perfect for maintaining ketosis.

How Cheese Impacts Texture and Taste

The type and amount of cheese you use can totally transform the outcome of your keto chicken and broccoli casserole.

• Too much cheese can make the casserole greasy and heavy.
• Too little, and you’ll miss that satisfying, creamy consistency.
• A balanced mix, especially combining soft cheeses like cream cheese with melty ones like mozzarella, creates a sauce that coats every bite.

Also, don’t forget to season your cheese layer. While cheese is flavorful, it benefits from added garlic powder, onion powder, or even a dash of paprika for extra depth.

For a final touch, broil your casserole for the last 2–3 minutes of baking. This gives the cheese topping a golden, bubbly finish that’s irresistible.

How to Prepare a Classic Keto Chicken and Broccoli Casserole

Step-by-Step Cooking Instructions

Making a keto chicken and broccoli casserole is easy—even for beginners. It’s a one-dish wonder that requires minimal prep, basic ingredients, and delivers maximum flavor.

Follow these steps for a reliable, delicious result every time:

Ingredients:

• 2 cups cooked shredded chicken (breast or thighs)
• 3 cups broccoli florets (fresh or thawed and drained frozen)
• 1 cup shredded cheddar cheese
• 4 oz cream cheese (softened)
• ½ cup heavy cream
• 1 cup shredded mozzarella
• Salt, pepper, garlic powder, paprika to taste

Instructions:

1. Preheat oven to 375°F (190°C).
2. Steam the broccoli lightly for 3–5 minutes to soften (don’t overcook).
3. In a large bowl, mix together shredded chicken, broccoli, cheddar, mozzarella, and seasonings.
4. In a separate saucepan, melt cream cheese over low heat and stir in the heavy cream until smooth.
5. Pour the cream sauce over the chicken and broccoli mixture and combine thoroughly.
6. Transfer everything to a greased 9×13-inch baking dish.
7. Sprinkle extra cheddar or parmesan on top for a golden finish.
8. Bake for 25–30 minutes, or until bubbly and golden on top.
9. Optional: Broil for the last 2–3 minutes for extra browning.

This version of the casserole creates the perfect harmony of creamy, cheesy goodness with well-cooked chicken and tender-crisp broccoli.

Tips for Achieving the Perfect Creamy Consistency

Here’s how to avoid common mistakes and guarantee the rich, smooth texture that makes this dish shine:

• Avoid watery broccoli: Drain and pat dry if using frozen. Too much moisture ruins the creaminess.
• Use softened cream cheese: Cold cream cheese won’t blend well into a sauce.
• Don’t overbake: Overcooking can dry out the casserole or separate the cream.

Also, consider mixing cheeses—a balance of creamy and melty cheeses improves both texture and flavor. And seasoning matters: underseasoned casseroles taste flat, so don’t forget salt, pepper, and spices like paprika or thyme.

Whether you’re prepping this dish ahead or serving it straight from the oven, this keto chicken and broccoli casserole will quickly become a weekly favorite in your kitchen.

Dairy-Free Keto Chicken and Broccoli Casserole Alternatives

How to Replace Cheese and Cream Without Losing Flavor

Think a creamy, cheesy casserole isn’t possible without dairy? Think again. You can make a satisfying keto chicken and broccoli casserole that’s both dairy-free and still rich in flavor and texture.

Here are smart swaps that keep the recipe keto while skipping dairy:

Bonus Tip: Add nutritional yeast to boost umami and give the casserole a cheesy flavor without actual cheese.

Dairy-free options work best when you choose unsweetened, full-fat varieties. Coconut cream is an excellent alternative because of its richness and ability to mimic the mouthfeel of dairy. Vegan cheese melts better when shredded and mixed with other ingredients before baking.

By experimenting with these substitutions, you’ll still enjoy a creamy and hearty casserole—without the lactose.

Top Non-Dairy Ingredients for Texture and Richness

If you’re skipping dairy, you’ll need to lean on plant-based fats and thickeners to keep your keto chicken and broccoli casserole from turning watery or bland. Here are some great ingredients to include:

• Coconut cream: Adds creamy texture and a subtle sweetness
• Avocado oil mayo: Gives a velvety finish when mixed with shredded chicken
• Cashew cream: Made by blending soaked cashews and water; perfect for a cheesy sauce replacement
• Arrowroot or xanthan gum: Thickens the sauce without adding carbs
• Tahini: Brings a nutty, earthy depth and helps bind the ingredients

For best results, combine multiple textures. For example, mix coconut cream with nutritional yeast and a dash of lemon juice to create a dairy-free “cheese” sauce that’s keto-friendly.

With these swaps, you’ll never miss the dairy—and you’ll keep your casserole low in carbs, rich in flavor, and perfect for any keto lifestyle.

Time-Saving Cooking Methods for Busy Keto Cooks

How to Make It in the Instant Pot or Slow Cooker

If you’re tight on time but still crave comfort food, the keto chicken and broccoli casserole adapts perfectly to your Instant Pot or slow cooker. Both methods are efficient and deliver incredible flavor with minimal effort.

Instant Pot Version:

1. Select Sauté and heat olive oil. Add seasoned chicken and cook until lightly browned.
2. Add broccoli and ½ cup of chicken broth.
3. Seal the lid and pressure cook on High for 3 minutes.
4. Use quick release, then stir in cream cheese, shredded cheddar, and a splash of heavy cream.
5. Mix well. Transfer to an oven-safe dish and broil for 2–3 minutes for a crispy top.

In under 30 minutes, you’ll have a rich, filling keto chicken and broccoli casserole with almost no cleanup.

Slow Cooker Version:

1. Add chicken, broccoli, cream cheese, broth, and seasonings to your slow cooker.
2. Cook on Low for 4–5 hours or High for 2–3 hours.
3. In the last 15–20 minutes, stir in shredded cheese to melt evenly.
4. Optional: Broil for a bubbly, golden topping.

This hands-free version results in a delicious, creamy keto-friendly casserole that’s perfect for batch cooking or busy nights.

Try Sheet Pan and One-Skillet Versions

Don’t have a slow cooker or Instant Pot? These quick alternatives are just as effective.

Sheet Pan Option:

• Spread cooked chicken and steamed broccoli on a lined baking sheet.
• Pour over a creamy cheese sauce, then sprinkle with extra shredded cheese.
• Bake at 375°F until bubbly and golden.

One-Skillet Option:

• Sauté broccoli and chicken in an oven-safe skillet with butter or avocado oil.
• Stir in your sauce, then top with cheese.
• Broil for 2–3 minutes to finish with a melty, crispy layer.

No matter how you prep it, this keto chicken and broccoli casserole remains a go-to meal. It’s fast, adaptable, and fits every style of cooking—from classic to modern.

Whether you’re planning a week of meal prep or making a quick family dinner, this low-carb casserole keeps you on track and satisfied.

Creative Variations to Keep Your Casserole Interesting

One of the best things about a keto chicken and broccoli casserole is its versatility. Whether you want new vegetables, different proteins, or bold flavors, you can make this dish exciting every time—without breaking your low-carb commitment.

Boost Variety With Keto Vegetables

Broccoli is the foundation, but adding other veggies brings flavor, nutrients, and texture.

These options bulk up your keto chicken and broccoli casserole without loading it with carbs.

Experiment With Cheese Combos

Cheese defines this creamy casserole. Try:

• Gruyère for nutty depth
• Goat cheese for a tangy twist
• Mozzarella for stretch
• Pepper jack for heat
• Parmesan for a golden crust

Mixing cheeses adds complexity and flavor variety to your dish.

Use Different Proteins

The casserole is incredibly forgiving when it comes to protein. Try replacing chicken with:

• Ground beef or turkey
• Pulled pork
• Crispy bacon or pancetta
• Tuna or canned salmon
• Tofu or tempeh (vegetarian option)

These variations create new versions of your keto chicken and broccoli casserole without changing the preparation method.

Add Crunch With Toppings

Texture makes every bite more satisfying. Try these crunchy keto toppings:

• Crushed pork rinds
• Toasted almond flour and cheese
• Chopped pecans or walnuts
• Fresh green onions or parsley

These additions elevate your keto casserole and give it visual appeal too.

Spice It Up With Bold Seasonings

Changing seasonings is the quickest way to give the dish a new identity:

• Buffalo sauce + ranch for spicy comfort
• Taco seasoning + cheddar for a Mexican twist
• Italian herbs + mozzarella for a classic feel
• Curry powder + coconut cream for warmth and depth

With just one or two changes, your keto chicken and broccoli casserole can feel brand new—without losing its creamy, satisfying base.

Storage Tips – Freezing, Reheating, and Meal Prepping

Your keto chicken and broccoli casserole isn’t just delicious fresh out of the oven—it’s also a meal prep champion. Whether you’re saving leftovers, planning weekly lunches, or batch-cooking, this casserole holds up well and stays keto-approved.

Storing in the Fridge for Short-Term Use

If you’re keeping it for a few days, refrigerate it properly:

• Let the casserole cool completely
• Store in airtight glass containers
• Use within 3–4 days

Portioning into single servings makes reheating easier and reduces food waste. The creamy texture stays intact when reheated slowly.

Freezing for Longer Storage

This keto chicken and broccoli casserole is freezer-friendly and ideal for batch cooking. Here’s how to do it right:

1. Allow it to cool fully
2. Slice into individual portions
3. Wrap each portion in foil or use freezer-safe containers
4. Label with the date
5. Store for up to 3 months

✅ Tip: For the best results, freeze before baking. Add the cheese topping fresh when you’re ready to cook.

Reheating Without Ruining Texture

You’ve frozen it—now what? Reheating correctly is key to keeping the creamy, cheesy goodness.

From Fridge:

• Oven: Reheat at 350°F, covered, for 15–20 minutes
• Microwave: Use medium power in 45-second intervals, stirring gently

From Freezer:

• Thaw overnight in the refrigerator
• Reheat in oven for 20–25 minutes at 350°F
• Optional: Add cheese before broiling for a crisp top

Avoid microwaving directly from frozen—it leads to uneven heating and a watery consistency.

Make-Ahead Meal Prep Tips

Want to prep multiple servings ahead? This low-carb casserole is perfect for meal planning.

Here’s how to meal prep it:

• Assemble the entire dish but don’t bake it
• Refrigerate for up to 48 hours or freeze unbaked
• Bake just before serving for best flavor and texture

You can also use muffin tins or silicone meal trays to freeze individual servings. This makes portion control and reheating easy, especially for those following strict keto macros.

Whether for the week ahead or the next three months, the keto chicken and broccoli casserole makes healthy eating simple, cost-effective, and satisfying.

Common Mistakes to Avoid When Making Keto Chicken and Broccoli Casserole

Making a creamy, flavorful keto chicken and broccoli casserole sounds simple—but it’s just as easy to mess it up. Here are the most common pitfalls and how to avoid them so your dish turns out perfect every time.

1. Using Too Much Liquid

Broccoli and chicken naturally release moisture when cooked. Adding too much broth, cream, or cheese sauce leads to a watery casserole.

✅ Fix:
Steam or sauté broccoli before mixing it in. Drain cooked chicken well. Use only the amount of cream or cheese your recipe calls for.

2. Skipping the Pre-Cooking Step

Raw chicken or vegetables may seem like a shortcut, but they often leave the casserole undercooked or uneven in texture.

✅ Fix:
Pre-cook or sauté your chicken and veggies for even doneness and flavor depth. This step ensures the creamy mixture doesn’t separate during baking.

3. Choosing the Wrong Cheese

Not all cheeses melt the same. Some get oily, some get rubbery, and others don’t melt at all.

✅ Fix:
Use cheeses that melt smoothly, like mozzarella, cheddar, and cream cheese. Avoid hard cheeses unless they’re being used as toppings.

4. Overbaking the Casserole

Overbaking dries out the dish and separates the fats in the cheese and cream. This leads to a gritty texture and greasy top.

✅ Fix:
Bake until just bubbly and golden—typically 20–25 minutes. Cover with foil if it browns too quickly.

5. Underseasoning the Dish

Cheese and cream add richness, but without spices, your keto chicken and broccoli casserole will taste bland.

✅ Fix:
Add garlic powder, onion powder, smoked paprika, Italian seasoning, or even Dijon mustard to enhance flavor.

6. Freezing Without Prepping Properly

Freezing a fully baked, saucy casserole can lead to separation and sogginess when reheated.

✅ Fix:
Freeze before baking or without the cheese topping. Reheat from thawed in the oven for best texture.

7. Ignoring Portion Control

This casserole is rich, and while it’s keto-friendly, portion sizes matter if you’re tracking macros.

✅ Fix:
Divide your dish into even servings before eating or freezing. Use a food scale if you’re following strict carb limits.

Avoiding these common errors helps you enjoy the best version of your keto chicken and broccoli casserole—creamy, flavorful, and always on point.

A Reliable, Customizable Keto Classic

If you’re looking for a satisfying, low-carb comfort food, the keto chicken and broccoli casserole should be on your regular meal rotation. It’s rich, creamy, and endlessly flexible—ideal for busy weeknights, make-ahead meals, or freezer-friendly batch cooking.

You can change the veggies, swap the cheese, play with proteins, or adapt it to dairy-free needs without compromising on taste. Best of all, you’ll stay on track with your keto goals while enjoying food that feels indulgent.

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