Keto Creamy Chicken and Broccoli Casserole

Featured in: Spicy Entrées

This hearty casserole combines diced chicken and steamed broccoli in a velvety blend of heavy cream, cream cheese, and melted cheddar. The aromatic base of sautéed onion and garlic adds depth, while paprika and thyme provide classic seasoning. After bubbling in the oven until golden and bubbly, the dish develops a irresistible cheesy crust. Perfect for meal prep, leftovers stay fresh for days and reheat beautifully for quick weeknight dinners.

Updated on Wed, 11 Feb 2026 12:00:44 GMT
Freshly baked Keto Creamy Chicken and Broccoli Casserole bubbling with melted cheddar and mozzarella in a ceramic dish. Save
Freshly baked Keto Creamy Chicken and Broccoli Casserole bubbling with melted cheddar and mozzarella in a ceramic dish. | pepperplume.com

Finding a meal that satisfies both comfort food cravings and a ketogenic lifestyle can be a challenge, but this Keto Creamy Chicken and Broccoli Casserole delivers on every front. Imagine tender pieces of chicken and vibrant broccoli florets enveloped in a rich, velvety cheese sauce, all baked until bubbly and golden. It is the ultimate one-dish wonder for busy weeknights when you want something hearty and satisfying without the extra carbohydrates.

Freshly baked Keto Creamy Chicken and Broccoli Casserole bubbling with melted cheddar and mozzarella in a ceramic dish. Save
Freshly baked Keto Creamy Chicken and Broccoli Casserole bubbling with melted cheddar and mozzarella in a ceramic dish. | pepperplume.com

This recipe is a staple for meal prepping or simply cleaning out the fridge. By using pre-cooked chicken and steamed broccoli, the assembly process is lightning fast. The combination of cheddar, mozzarella, and cream cheese creates a multi-layered flavor profile that rivals any traditional pasta-based casserole, making it a favorite for the whole family.

Ingredients

  • Proteins: 500 g (1.1 lbs) boneless, skinless chicken breast or thighs, cooked and diced
  • Vegetables: 300 g (10 oz) broccoli florets, steamed; 1 small onion, finely chopped; 2 garlic cloves, minced
  • Dairy: 120 ml (½ cup) heavy cream; 120 g (1 cup) shredded cheddar cheese; 60 g (½ cup) shredded mozzarella cheese; 60 g (¼ cup) cream cheese, softened
  • Pantry: 2 tbsp olive oil; ½ tsp paprika; ½ tsp dried thyme; ½ tsp ground black pepper; ½ tsp salt
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Instructions

Step 1
Preheat the oven to 190°C (375°F).
Step 2
Heat olive oil in a skillet over medium heat. Add onion and sauté until translucent, about 3 minutes. Add garlic and cook for 1 minute more.
Step 3
In a large mixing bowl, combine the cooked chicken, steamed broccoli, sautéed onion and garlic, heavy cream, cream cheese, half of the cheddar, half of the mozzarella, paprika, thyme, salt, and pepper. Mix well until the sauce is smooth and ingredients are evenly distributed.
Step 4
Transfer the mixture to a lightly greased 20x20 cm (8x8-inch) casserole dish.
Step 5
Sprinkle the remaining cheddar and mozzarella evenly over the top.
Step 6
Bake for 25–30 minutes until the casserole is bubbly and golden on top.
Step 7
Let rest for 5 minutes before serving.

Zusatztipps für die Zubereitung

To ensure the best texture, make sure the cream cheese is fully softened at room temperature before mixing. This ensures a silky smooth sauce without any lumps. Additionally, resting the casserole for 5 minutes after it leaves the oven is crucial as it allows the cheese sauce to set slightly.

Varianten und Anpassungen

This dish is highly versatile. If you want to change the vegetable profile, you can substitute cauliflower for part or all of the broccoli. For those who enjoy a bit of heat, adding a pinch of red pepper flakes to the sauce mixture provides a subtle kick that complements the creamy base.

Serviervorschläge

Pair this rich and comforting casserole with a simple green salad dressed in a light vinaigrette to provide a crisp contrast to the cheesy sauce. It also pairs beautifully with roasted asparagus or a side of cauliflower rice if you want an even more substantial keto meal.

Golden-brown top of low-carb Keto Creamy Chicken and Broccoli Casserole served alongside a crisp green salad. Save
Golden-brown top of low-carb Keto Creamy Chicken and Broccoli Casserole served alongside a crisp green salad. | pepperplume.com

Once that golden crust emerges from the oven, you'll have a dinner that feels like a total indulgence but fits perfectly within your goals. Whether you are cooking for guests or preparing a quiet weeknight meal, this creamy casserole is sure to become a frequent addition to your keto rotation. Enjoy every cheesy, protein-packed bite!

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Recipe FAQ

Can I use rotisserie chicken instead of cooking fresh chicken?

Yes, rotisserie chicken works perfectly and actually saves time. Simply shred or dice the meat and add it directly to the mixture. The seasoning from rotisserie chicken adds extra flavor depth.

How do I make this casserole dairy-free?

Substitute heavy cream with full-fat coconut cream or almond milk thickened with nutritional yeast. Use vegan cheese shreds for the cheesy topping, though the texture will be slightly different.

Can I freeze this keto casserole?

Absolutely! Assemble the casserole, wrap tightly with plastic and foil, then freeze for up to 3 months. Thaw overnight in the refrigerator before baking as directed.

What vegetables work well as broccoli substitutes?

Cauliflower florets are the closest match in texture and carb count. You can also use sliced zucchini, spinach, or a mix of low-carb vegetables like green beans and bell peppers.

How can I increase the protein content?

Add crumbled bacon, diced ham, or mix in some ricotta cheese. You can also increase the chicken portion to 750g while adjusting seasonings slightly to maintain flavor balance.

Why did my sauce separate during baking?

This usually happens if the oven temperature is too high or the casserole bakes too long. Stick to 190°C and check at 25 minutes. Adding the cream cheese at room temperature helps prevent separation.

Keto Creamy Chicken and Broccoli Casserole

Rich, comforting bake with tender chicken, broccoli, and three-cheese creamy sauce. Ready in under an hour.

Prep duration
15 min
Cook duration
35 min
Complete duration
50 min
Created by Isabella Flores


Complexity Easy

Heritage American

Output 4 Portions

Diet considerations No gluten, Low-Carbohydrate

Components

Proteins

01 1.1 lbs boneless, skinless chicken breast or thighs, cooked and diced

Vegetables

01 10 oz broccoli florets, steamed
02 1 small onion, finely chopped
03 2 garlic cloves, minced

Dairy

01 1/2 cup heavy cream
02 1 cup shredded cheddar cheese
03 1/2 cup shredded mozzarella cheese
04 1/4 cup cream cheese, softened

Pantry

01 2 tablespoons olive oil
02 1/2 teaspoon paprika
03 1/2 teaspoon dried thyme
04 1/2 teaspoon ground black pepper
05 1/2 teaspoon salt

Directions

Phase 01

Preheat Oven: Preheat the oven to 375°F.

Phase 02

Sauté Aromatics: Heat olive oil in a skillet over medium heat. Add onion and sauté until translucent, about 3 minutes. Add garlic and cook for 1 minute more.

Phase 03

Combine Casserole Mixture: In a large mixing bowl, combine the cooked chicken, steamed broccoli, sautéed onion and garlic, heavy cream, cream cheese, half of the cheddar, half of the mozzarella, paprika, thyme, salt, and pepper. Mix well until the sauce is smooth and ingredients are evenly distributed.

Phase 04

Transfer to Casserole Dish: Transfer the mixture to a lightly greased 8x8-inch casserole dish.

Phase 05

Add Cheese Topping: Sprinkle the remaining cheddar and mozzarella evenly over the top.

Phase 06

Bake Casserole: Bake for 25-30 minutes until the casserole is bubbly and golden on top.

Phase 07

Rest Before Serving: Let rest for 5 minutes before serving.

Necessary tools

  • Skillet
  • Large mixing bowl
  • 8x8-inch casserole dish
  • Oven
  • Knife and cutting board

Allergy details

Review each ingredient for potential allergens and seek professional health advice if you're uncertain.
  • Contains dairy (cheddar, mozzarella, cream cheese, heavy cream)
  • Contains allium (onion, garlic)
  • Verify cheese and cream labels for gluten-containing additives

Nutrient breakdown (per portion)

These values are estimates only and shouldn't replace professional medical guidance.
  • Energy: 430
  • Fats: 29 g
  • Carbohydrates: 6 g
  • Proteins: 38 g