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Keto Garlic Mushroom Chicken Casserole

Prep Time 15 minutes
Cook Time 45 minutes
Total Time 1 hour
Servings 6 Servings
Calories 520
This Keto Garlic Mushroom Chicken Casserole is a creamy, savory oven-baked dish made with tender chicken thighs, sautéed mushrooms, and a rich garlic cream sauce. Comforting, low-carb, and built to hold its texture without fillers.

Ingredients

  • 2 lb chicken thigh (skinless, boneless)
  • 12 oz mushrooms (sliced)
  • 1 ¼ cups heavy cream
  • 4 cloves garlic (minced)
  • 1 tsp onion powder
  • 1 tsp dried thyme
  • ¾ tsp salt
  • ½ tsp black pepper
  • ½ cup shredded mozzarella cheese
  • ¼ cup grated Parmesan cheese
  • 2 tbsp butter
  • 1 tbsp olive oil

Instructions 

  • Preheat the oven to 375°F and lightly grease a baking dish.
  • Heat olive oil and butter in a skillet over medium heat. Add mushrooms and cook until browned and most moisture has evaporated.
  • Add minced garlic to the mushrooms and cook for 30 seconds until fragrant. Remove from heat.
  • Arrange the chicken thighs evenly in the prepared baking dish.
  • Spread the mushroom and garlic mixture over the chicken.
  • In a bowl, whisk together heavy cream, onion powder, dried thyme, salt, and black pepper.
  • Pour the cream mixture evenly over the chicken and mushrooms.
  • Sprinkle mozzarella and Parmesan evenly on top.
  • Bake uncovered for 40–45 minutes, until the chicken is cooked through and the sauce is thick and bubbling.
  • Rest for 5 minutes before serving.
Calories: 520kcal
Course: Dinner
Cuisine: American
Keyword: garlic mushroom chicken,, keto chicken casserole, low carb casserole