Keto Garlic Mushroom Chicken Casserole Recipe
Introduction
This Keto Garlic Mushroom Chicken Casserole is a creamy, comforting dish perfect for low-carb meals. Packed with tender chicken, sautéed mushrooms, and melted cheese, it’s an easy recipe that delivers rich flavor without the carbs.

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
- 2 tablespoons fresh parsley, chopped (for garnish)
Instructions
- Step 1: Preheat your oven to 375°F (190°C).
- 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 1-2 minutes, stirring frequently to prevent burning, until fragrant.
- Step 4: In a large mixing bowl, combine cooked chicken, sautéed mushrooms and garlic, heavy cream, dried thyme, dried oregano, salt, and pepper. Mix well to combine.
- Step 5: Transfer the mixture into a greased 9×13-inch casserole dish, spreading it evenly across the bottom.
- Step 6: Sprinkle shredded mozzarella and grated Parmesan cheese evenly over the chicken mixture.
- Step 7: Bake the casserole in the preheated oven for 25-30 minutes, or until the cheese is bubbly and golden brown.
- Step 8: Remove from the oven and allow to cool for a few minutes. Garnish with fresh parsley before serving.
Tips & Variations
- For a crispier top, broil the casserole for an additional 2-3 minutes after baking.
- Use rotisserie chicken or shredded turkey as convenient protein alternatives.
- Make a vegetarian version by substituting chicken with chickpeas or tofu.
- Mushrooms add antioxidants and vitamins D and B, making this dish nutritious as well as tasty.
Storage
Store leftovers in an airtight container in the refrigerator for up to 3 days. Reheat gently in the microwave or oven until warmed through. This casserole freezes well; thaw overnight in the fridge before reheating.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use fresh herbs instead of dried thyme and oregano?
Yes, fresh herbs can be used. Use about three times the amount of fresh herbs compared to dried to maintain flavor balance.
Is this casserole suitable for a strict keto diet?
Absolutely. The ingredients are low in carbs and high in fat and protein, fitting well into a keto lifestyle.
PrintKeto Garlic Mushroom Chicken Casserole Recipe
A rich and creamy Keto Garlic Mushroom Chicken Casserole packed with tender chicken, sautéed mushrooms, and a blend of cheeses, delivering comfort food that fits perfectly into a low-carb ketogenic diet.
- Prep Time: 10 minutes
- Cook Time: 35 minutes
- Total Time: 45 minutes
- Yield: 4 servings 1x
- Category: Casserole
- Method: Baking
- Cuisine: American
- Diet: Low Carb, Keto
Ingredients
Chicken and Vegetables
- 2 cups cooked chicken, shredded or diced
- 8 ounces mushrooms, sliced (button or cremini)
- 4 cloves garlic, minced
Dairy and Cheese
- 1 cup heavy cream
- 1 cup shredded mozzarella cheese
- 1/2 cup grated Parmesan cheese
Seasonings and Oil
- 1 tablespoon olive oil
- 1 teaspoon dried thyme
- 1 teaspoon dried oregano
- Salt and pepper to taste
- 2 tablespoons fresh parsley, chopped (for garnish)
Instructions
- Preheat Oven: Preheat your oven to 375°F (190°C) to prepare for baking the casserole.
- Sauté Mushrooms: Heat olive oil in a large skillet over medium heat. Add the sliced mushrooms and sauté for 5-7 minutes until they are golden brown and have released their moisture.
- Add Garlic: Stir in the minced garlic and cook for 1-2 minutes until fragrant, making sure to stir continuously to prevent burning.
- 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 evenly combined.
- Assemble Casserole: Transfer the mixture into a greased 9×13-inch casserole dish, spreading it evenly across the bottom.
- Add Cheese Topping: Generously sprinkle shredded mozzarella and grated Parmesan cheese on top of the chicken mixture.
- Bake: Place the casserole dish into the preheated oven and bake for 25-30 minutes until the cheese is bubbly and golden brown.
- Garnish and Serve: Remove the casserole from the oven and let it cool slightly. Garnish with freshly chopped parsley before serving.
Notes
- For a crustier top, broil the casserole for an additional 2-3 minutes after baking.
- Use rotisserie chicken or shredded turkey as alternative proteins.
- For a vegetarian version, substitute chicken with chickpeas or tofu.
- Mushrooms provide antioxidants and vitamins D and B, boosting nutritional value.
Keywords: keto chicken casserole, garlic mushroom casserole, low carb dinner, creamy chicken bake, cheese chicken casserole

