Keto chicken casserole

Ingredients

- 8 +

• 4 large chicken breasts (about 2 pounds), cut into 1-inch cubes for even cooking
• 3 cups fresh broccoli florets, cut into bite-sized pieces for consistent cooking
• 2 cups heavy cream, at room temperature for smooth incorporation
• 8 ounces cream cheese, softened and cut into small cubes
• 3 cups shredded mozzarella cheese, divided for layering and topping
• 1 cup grated parmesan cheese for extra depth of flavor
• 4 large cloves of garlic, finely minced or pressed
• 2 tablespoons butter for sautéing
• 1 medium onion, finely diced
• 2 teaspoons Italian seasoning blend
• 1 teaspoon sea salt, or to taste
• 1/2 teaspoon freshly ground black pepper
• 1/4 teaspoon red pepper flakes (optional for heat)

Instructions

1

Begin by preheating your oven to 375°F (190°C) and position the rack in the center for optimal heat distribution

Done!

2

Generously grease a 9x13 inch baking dish with butter or non-stick cooking spray, ensuring complete coverage

Done!

3

In a large skillet over medium-high heat, melt the butter and sauté the diced onions until translucent and fragrant, about 3-4 minutes

Done!

4

Add the minced garlic to the skillet and cook for an additional 30 seconds until aromatic, being careful not to burn

Done!

5

Add the chicken cubes to the skillet and cook until golden brown on all sides, approximately 5-7 minutes

Done!

6

In a large mixing bowl, combine the heavy cream, softened cream cheese, half of the mozzarella, and all seasonings until well blended

Done!

7

Gently fold in the cooked chicken mixture and fresh broccoli florets until evenly distributed throughout the cream sauce

Done!

8

Transfer the mixture to your prepared baking dish and top with remaining mozzarella and parmesan cheese

Done!

9

Bake uncovered for 25-30 minutes until the cheese is golden brown and bubbly, and the broccoli is tender-crisp

Done!

10

Allow the casserole to rest for 10 minutes before serving to help the sauce thicken properly

Done!

Kitchen Tools

• 9x13 inch baking dish for even heat distribution
• Large skillet for sautéing chicken and vegetables
• Sharp chef's knife for precise cutting of ingredients
• Mixing bowls of various sizes for preparation

Chef's Tips

Use freshly grated cheese instead of pre-packaged for superior melting and flavor profile

Blanch the broccoli briefly before adding to ensure perfect texture in the final dish

Allow cream cheese to fully soften at room temperature for smoother incorporation

Pat chicken pieces dry with paper towels before cooking to achieve better browning

Troubleshooting

If sauce appears too thin, allow casserole to rest longer before serving

If top browns too quickly, cover with foil for remaining bake time

If broccoli is too firm, cover dish during first half of baking

If sauce separates, ensure all dairy ingredients were at room temperature

Recipe Variations

Spicy version: Add diced jalapeños and cayenne pepper for heat

Mediterranean style: Include sun-dried tomatoes and kalamata olives

Buffalo chicken: Add buffalo sauce and blue cheese crumbles

Mushroom lover's: Add various sautéed mushrooms for earthiness

Healthy Alternatives

Substitute half the heavy cream with unsweetened almond milk to reduce calories while maintaining creaminess

Use light cream cheese to lower the overall fat content without sacrificing texture

Add extra vegetables like cauliflower or spinach to increase the nutrient density

Consider using Greek yogurt in place of some of the cream cheese for added protein

Serving Suggestions

Serve over cauliflower rice for a complete low-carb meal option

Pair with a fresh green salad dressed with olive oil and lemon juice

Garnish with fresh herbs like parsley or chives for added color and flavor

Accompany with roasted vegetables seasoned with garlic and herbs

Nutrition Facts

420

Calories

35g

Protein

8g

Carbs

28g

Fat

3g

Fiber

2g

Sugar

580mg

Sodium

125mg

Cholesterol

Dietary Info

Keto-friendly with high fat and very low carb content

Gluten-free naturally without any modifications needed

Low-carb appropriate for various dietary needs

Can be adapted for carnivore diet by omitting vegetables

Garnish Ideas

Fresh chopped parsley or chives for color and freshness

Extra grated parmesan cheese for serving

Crispy crumbled bacon bits for texture contrast

Red pepper flakes for those who enjoy extra heat

Storage

Store leftovers in an airtight container in the refrigerator for up to 4 days

Freeze portions in freezer-safe containers for up to 2 months

Thaw frozen portions overnight in the refrigerator before reheating

Reheat gently in the oven at 350°F covered with foil until warm throughout

Leftover Ideas

Reheat individual portions in the microwave covered with a damp paper towel

Use leftover portions for lunch meal prep throughout the week

Transform leftovers into a keto-friendly dip by adding extra cheese

Create a new meal by adding fresh vegetables when reheating

Common Mistakes to Avoid

Overcooking the chicken before baking, which can result in dry, tough meat

Using cold dairy ingredients that won't blend smoothly into the sauce

Not allowing enough time for the casserole to rest before serving

Cutting chicken pieces unevenly, leading to inconsistent cooking times

Frequently Asked Questions

Can I use frozen broccoli?

Yes, but thaw and drain it well first to prevent excess water in the casserole

How do I prevent the sauce from curdling?

Ensure all dairy ingredients are at room temperature before combining

Can I make this ahead of time?

Yes, assemble up to 24 hours ahead and refrigerate before baking

Is this casserole freezer-friendly?

Yes, it freezes well for up to 2 months in airtight containers

Can I use rotisserie chicken?

Absolutely! Use pre-cooked chicken to save time, about 4 cups chopped

How do I know when it's done?

The cheese should be golden brown and bubbly, and the center should be hot

Can I add different vegetables?

Yes, just ensure they're low-carb options to maintain keto compliance

Reviews

Sarah M.

Mar 4, 2026

Perfect keto dinner! My family couldn't believe it was low-carb.

Michael P.

Mar 16, 2026

Delicious and filling, though I added extra garlic for more flavor.

Jennifer K.

Mar 15, 2026

This has become our weekly dinner staple. So creamy and satisfying!

Robert D.

Mar 3, 2026

Great recipe, but definitely watch the salt content with all the cheese.

Lisa B.

Mar 6, 2026

The ultimate comfort food while staying keto. Amazing recipe!