Keto Garlic Mushroom Chicken Casserole — Low-Carb Comfort Dinner Recipe
Introduction
This Keto Garlic Mushroom Chicken Casserole is a comforting low-carb dinner that’s packed with flavor. Creamy, cheesy, and full of tender chicken and mushrooms, it’s perfect for a satisfying meal any night of the week.

Ingredients
- 2 cups cooked chicken, shredded or diced
- 8 ounces mushrooms, sliced (button or cremini)
- 4 cloves garlic, minced
- 1 cup heavy cream
- 1 cup shredded mozzarella cheese
- 1/2 cup grated Parmesan cheese
- 1 tablespoon olive oil
- 1 teaspoon dried thyme
- 1 teaspoon dried oregano
- Salt and pepper, to taste
- Fresh parsley, chopped (for garnish)
Instructions
- Step 1: Preheat your oven to 375°F (190°C) to ensure even baking and a golden finish.
- Step 2: Heat olive oil in a large skillet over medium heat. Add sliced mushrooms and sauté for 5-7 minutes until golden brown and their moisture has evaporated.
- Step 3: Add minced garlic to the skillet and cook for another 1-2 minutes, stirring constantly to prevent burning, until fragrant.
- Step 4: In a large mixing bowl, combine the cooked chicken, sautéed mushrooms and garlic, heavy cream, dried thyme, oregano, salt, and pepper. Mix well until fully combined.
- Step 5: Transfer the mixture to a greased 9×13-inch casserole dish, spreading it evenly.
- Step 6: Sprinkle shredded mozzarella and grated Parmesan cheese evenly over the top of the casserole.
- Step 7: Bake in the preheated oven for 25-30 minutes, or until the cheese is bubbly and golden brown.
- Step 8: Remove from oven and let cool for a few minutes. Garnish with chopped fresh parsley before serving.
Tips & Variations
- For extra flavor, try adding a pinch of smoked paprika or a splash of white wine to the mushroom sauté.
- You can substitute the mozzarella with cheddar or Monterey Jack cheese for a different cheesy profile.
- Use cooked turkey or leftover rotisserie chicken as a convenient alternative to freshly cooked chicken.
- If you prefer more vegetables, add chopped spinach or diced bell peppers to the mixture before baking.
Storage
Store leftover casserole in an airtight container in the refrigerator for up to 3 days. To reheat, warm individual portions in the microwave or oven until heated through, adding a splash of cream or broth if it seems dry.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I make this casserole ahead of time?
Yes, you can prepare the casserole up to the baking step, then cover and refrigerate it for up to 24 hours before baking.
Is this recipe suitable for other low-carb diets besides keto?
Absolutely. This dish is naturally low in carbs and works well for most low-carb diets, not just keto.
PrintKeto Garlic Mushroom Chicken Casserole — Low-Carb Comfort Dinner Recipe
This Keto Garlic Mushroom Chicken Casserole is a comforting low-carb dinner perfect for those following a ketogenic lifestyle. Featuring tender cooked chicken, sautéed garlic and mushrooms, and a creamy cheese topping baked to golden perfection, this dish combines rich flavors with a satisfying, creamy texture that’s ideal for a cozy meal.
- Prep Time: 10 minutes
- Cook Time: 35 minutes
- Total Time: 45 minutes
- Yield: 4 servings 1x
- Category: Main Course
- Method: Baking
- Cuisine: American
- Diet: Low Carb
Ingredients
Chicken and Vegetables
- 2 cups cooked chicken, shredded or diced
- 8 ounces mushrooms, sliced (button or cremini)
- 4 cloves garlic, minced
Sauce and Seasonings
- 1 cup heavy cream
- 1 tablespoon olive oil
- 1 teaspoon dried thyme
- 1 teaspoon dried oregano
- Salt and pepper, to taste
Cheese and Garnish
- 1 cup shredded mozzarella cheese
- 1/2 cup grated Parmesan cheese
- Fresh parsley, chopped (for garnish)
Instructions
- Preheat Oven: Preheat your oven to 375°F (190°C) to ensure even baking and a golden cheese topping.
- Sauté Mushrooms: Heat olive oil in a large skillet over medium heat. Add the sliced mushrooms and cook for 5-7 minutes until they turn golden brown and release their moisture.
- Add Garlic: Stir in the minced garlic and cook for an additional 1-2 minutes until fragrant, being careful not to burn the garlic.
- Combine Ingredients: In a large mixing bowl, mix together the cooked chicken, sautéed mushrooms and garlic, heavy cream, dried thyme, dried oregano, salt, and pepper until well combined.
- Prepare Casserole Dish: Grease a 9×13-inch casserole dish and spread the chicken mixture evenly over the bottom.
- Add Cheese Topping: Sprinkle the shredded mozzarella and grated Parmesan cheeses evenly on top of the chicken mixture.
- Bake: Place the casserole in the preheated oven and bake for 25-30 minutes, until the cheese is bubbly and golden brown.
- Garnish and Serve: Remove from the oven, let cool slightly, then garnish with freshly chopped parsley before serving hot.
Notes
- Use cooked chicken from a rotisserie or leftover baked chicken to save time.
- For extra flavor, consider adding a pinch of red pepper flakes or smoked paprika.
- If you want a crispier top, broil the casserole for 1-2 minutes after baking but watch closely to avoid burning.
- You can substitute heavy cream with full-fat coconut cream for a dairy-free version, though taste and texture will vary.
- Make sure not to overcook the mushrooms during sautéeing as they will continue cooking in the oven.
Keywords: keto casserole, garlic mushroom chicken, low carb dinner, creamy chicken casserole, baked chicken recipe, keto comfort food, low carb mushroom chicken

