Keto Chicken Alfredo Casserole is the ultimate low-carb comfort dish that’s both hearty and cheesy. Loaded with tender chicken, creamy keto alfredo sauce, and bite-sized cauliflower, this casserole is perfect for busy weeknights or family dinners. Whether you’re new to the keto lifestyle or simply looking for a low-carb twist on a classic favorite, this recipe will become a go-to.
Why You’ll Love This Keto Chicken Alfredo Casserole
Eating keto doesn’t mean giving up on comfort foods. This casserole delivers all the rich, creamy flavors of traditional chicken Alfredo without the carbs from pasta. By swapping in cauliflower for noodles, you still get that satisfying texture, while keeping it keto-friendly.
We based this recipe on our popular low-carb casserole ideas but added a delicious Alfredo twist. The combination of chicken, melted mozzarella, and creamy alfredo sauce makes it a dish everyone will love. Plus, it’s quick to prepare, making it ideal for busy evenings.
Ingredients You’ll Need
To make this keto chicken Alfredo casserole, you only need a handful of simple ingredients:
- Cauliflower florets – Cut into bite-sized pieces. You can use pre-cut florets or a full cauliflower head.
- Chicken breast – Cubed for even cooking. Chicken thighs work too if you prefer.
- Seasonings – Onion powder, garlic powder, salt, and pepper to give the chicken a rich flavor.
- Mozzarella cheese – Melted throughout for gooey, cheesy goodness. Pre-shredded saves time.
- Keto Alfredo Sauce – Use a low-carb store-bought version or a homemade recipe.
The combination of these ingredients makes a casserole that’s creamy, cheesy, and perfectly keto.
Preparing the Cauliflower
Start by steaming the cauliflower to release some of its moisture. Place the bite-sized pieces in a microwave-safe bowl with about one cup of water. Cover with a damp paper towel and microwave on high for 3–5 minutes until tender but not mushy. Overcooked cauliflower can become too soft and watery in your casserole.
Once done, drain the cauliflower and pat dry with paper towels to remove any remaining moisture. This step ensures your casserole won’t be watery.
Cooking the Chicken
Cut your chicken into approximately 1-inch cubes. Sprinkle with onion powder, garlic powder, salt, and pepper for flavor. Heat olive oil in a skillet over medium-high heat, then add the chicken. Cook for around 10 minutes, turning occasionally until the chicken is fully cooked and slightly golden. Set aside while you prepare the rest of the dish.
Preparing the Casserole Dish
Preheat your oven to 350°F (175°C). Spray a 13×9-inch casserole dish with non-stick cooking spray. Spread about ½ cup of keto alfredo sauce on the bottom of the dish to create a flavorful base for the layers.
Making the Alfredo Sauce
In a small pot over medium-low heat, warm your keto alfredo sauce. Once hot, stir in 3 ounces of mozzarella cheese until fully melted and smooth. This will make your casserole extra creamy and cheesy.
Assembling the Layers
Layering is key for the perfect keto chicken Alfredo casserole. Start with half of the cauliflower at the bottom of the dish. Add half of the cooked chicken, distributing it evenly. Pour ¾ cup of the alfredo sauce over the mixture, then sprinkle half of the remaining mozzarella cheese on top.
Repeat the process with the remaining cauliflower, chicken, sauce, and mozzarella cheese to form a second layer. This creates a fully loaded, gooey casserole ready for baking.
Baking and Serving
Place the casserole in the preheated oven and bake for 30 minutes or until fully warmed through and the cheese is melted and bubbly. Allow it to sit for a few minutes before serving hot. The flavors meld beautifully while resting, making every bite rich and satisfying.
Tips for a Perfect Keto Chicken Alfredo Casserole
- Dry the Cauliflower – Essential to prevent a watery casserole.
- Use Cauliflower Rice (Optional) – If you prefer, you can substitute cauliflower rice for florets. No need to pre-cook it; it cooks quickly in the oven.
- Cheese Variations – Feel free to mix in parmesan or provolone for extra flavor.
- Make Ahead – Cook the chicken and steam the cauliflower in advance to save time.
Storing and Reheating
Allow the casserole to cool completely, then store in an airtight container in the refrigerator for up to 4–5 days. To reheat, bake at 325°F (160°C) for 10–15 minutes, or microwave individual portions for 2–3 minutes.
Note: Freezing is not recommended as cauliflower can become mushy and the sauce may separate.
Print
Keto Chicken Alfredo Casserole: Cheesy Low-Carb Comfort Food
- Total Time: 55 min
Ingredients
14 ounces cauliflower florets, cut into bite-sized pieces
32 ounces chicken breast, cubed
1 teaspoon onion powder
1 teaspoon garlic powder
½ teaspoon salt
¼ teaspoon pepper
1 tablespoon olive oil
2 cups keto alfredo sauce
12 ounces shredded mozzarella cheese, divided
Instructions
- Steam the cauliflower: Place cauliflower in a microwave-safe bowl with 1 cup water. Cover with a damp paper towel and microwave 3–5 minutes until fork-tender. Don’t overcook. Drain and pat dry.
- Cook the chicken: Cube chicken, season with onion powder, garlic powder, salt, and pepper. Heat olive oil in a skillet over medium-high heat, cook chicken 10 minutes or until done. Set aside.
- Preheat oven: 350°F (175°C). Spray a 13×9-inch casserole dish with non-stick spray. Spread ½ cup keto alfredo sauce on the bottom.
- Prepare sauce: In a small pot, heat keto alfredo sauce over medium-low. Stir in 3 ounces mozzarella until smooth.
- Assemble layers: Layer half cauliflower, half chicken, ¾ cup alfredo sauce, and half remaining mozzarella. Repeat with remaining ingredients.
- Bake: 30 minutes until casserole is warmed through and cheese is melted. Let sit a few minutes before serving.
Notes
- Dry the cauliflower: Patting dry after steaming prevents a watery casserole.
- Substitute cauliflower rice: Quick-cooking and works well if you prefer smaller pieces.
- Cheese options: Mix mozzarella with parmesan for richer flavor.
- Storage: Refrigerate in an airtight container for 4–5 days. Microwave or oven to reheat. Avoid freezing.
- Prep Time: 15 min
- Cook Time: 40 min
