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Easy Low Carb Chicken Casserole – Creamy, Healthy, and Ready in 30 Minutes

Looking for a comforting, healthy dinner? This Easy Low Carb Chicken Casserole is packed with tender chicken, creamy cheese, and flavorful low-carb veggies — all baked to golden perfection. Perfect for keto and low-carb diets, it’s an effortless weeknight meal that the whole family will love. Ready in just 30 minutes, it’s ideal for busy nights and meal prep!
Prep Time 10 minutes
Cook Time 25 minutes
Total Time 35 minutes
Course Dinner, Main Course
Cuisine American, Keto, Low-Carb, Paleo-Friendly
Servings 6 generous portions
Calories 400 kcal

Equipment

  • 9x13-inch baking dish (glass or ceramic recommended)
  • Mixing bowls
  • Whisk
  • Sharp chef’s knife
  • Cutting board
  • Oven

Ingredients
  

  • 1.5 lbs chicken breast or thighs, cut into bite-sized pieces
  • 1 cup broccoli florets (lightly steamed)
  • 1 cup cauliflower florets (lightly steamed)
  • 2 cups fresh spinach (optional)
  • 4 oz cream cheese, softened
  • ½ cup sour cream
  • ½ cup heavy cream
  • 1 cup shredded mozzarella
  • ½ cup shredded cheddar
  • ¼ cup grated parmesan
  • 1 tsp garlic powder
  • 1 tsp onion powder
  • 1 tsp dried thyme
  • 2 tbsp fresh parsley, chopped
  • Salt & pepper, to taste
  • Optional: ¼ tsp xanthan gum or 2 tbsp almond flour (for thickening)

Instructions
 

  • Preheat oven to 375°F (190°C).
  • Season chicken pieces with salt, pepper, garlic powder, onion powder, and thyme. Optionally sear chicken in a hot skillet for 3–4 minutes until lightly browned.
  • Lightly steam broccoli and cauliflower; roughly chop spinach if using.
  • In a mixing bowl, whisk cream cheese, sour cream, heavy cream, mozzarella, cheddar, parmesan, and parsley until smooth. Add optional thickener if desired.
  • Combine chicken and vegetables in the baking dish, pour the creamy sauce evenly over the top, and gently toss to coat.
  • Bake for 20–25 minutes until the casserole is bubbly and golden on top. Check chicken temperature reaches 165°F (74°C).
  • Let the casserole rest for 5 minutes before serving. Garnish with extra parsley or parmesan if desired.

Notes

  • Cream Cheese Tip: Soften cream cheese before mixing to avoid lumps.
  • Vegetables: Lightly steaming broccoli and cauliflower prevents sogginess but you can also use raw for crunchier texture.
  • Thickening: Xanthan gum or almond flour helps thicken the sauce without adding carbs; omit if preferred but sauce will be thinner.
  • Searing Chicken: Adds flavor but can be skipped to save time.
  • Storage: Store leftovers in an airtight container for up to 3 days; reheat gently to preserve creaminess.
  • Freezing: Freeze in portions for up to 2 months; thaw overnight before reheating.
Keyword creamy chicken casserole, Gluten-free chicken recipe, healthy casseroles, Keto chicken dinner, low carb chicken casserole