This keto turkey casserole is the perfect way to turn simple ingredients into a rich, satisfying, and low-carb comfort meal. Whether you’re using leftover turkey or freshly cooked meat, this dish combines tender turkey, creamy sauce, and melted cheese into a warm, hearty bake.
Low-carb casseroles like this are especially popular because they replace traditional high-carb ingredients with options like cauliflower rice or vegetables while keeping the same creamy, cheesy texture. Many variations use ingredients like mushrooms, cheese, cream, and herbs to build a balanced dish that’s both filling and flavorful.
Ingredients
- 3 cups (400 g) cooked turkey, diced or shredded
- 1 tablespoon (15 ml) olive oil
- 1/2 cup (75 g) diced onion
- 1/2 cup (75 g) sliced mushrooms
- 1/2 cup (75 g) chopped celery
- 3 cloves garlic, minced
- 2 cups (300 g) cauliflower rice
- 1/2 cup (120 ml) heavy cream
- 2 large eggs
- 1/2 cup (120 g) sour cream
- 1 cup (100 g) shredded mozzarella cheese
- 1/2 cup (50 g) shredded cheddar cheese
- 1/4 cup (25 g) grated parmesan cheese
- 1 teaspoon dried thyme
- 1/2 teaspoon paprika
- 1/2 teaspoon salt
- 1/4 teaspoon black pepper
- 1 tablespoon chopped parsley (optional)
Equipments
- 9×9 or 9×13 inch baking dish
- Large skillet
- Mixing bowl
- Whisk
- Spatula
- Knife and cutting board
- Measuring cups and spoons
Instructions
- Preheat your oven to 375°F (190°C) and lightly grease a baking dish
- Heat olive oil in a large skillet over medium heat
- Add diced onion, celery, and mushrooms, cooking for 5–6 minutes until softened
- Stir in minced garlic and cook for 30 seconds until fragrant
- Add cauliflower rice and sauté for 3–4 minutes to reduce moisture
- Add cooked turkey to the skillet and mix everything evenly
- Season with thyme, paprika, salt, and pepper
- In a mixing bowl, whisk together heavy cream, eggs, and sour cream until smooth
- Stir in half of the mozzarella and cheddar cheese into the creamy mixture
- Combine the creamy mixture with the turkey mixture and stir well
- Transfer everything into the prepared baking dish
- Spread evenly using a spatula
- Sprinkle remaining mozzarella, cheddar, and parmesan cheese over the top
- Bake for 25–30 minutes until the casserole is set and cheese is melted
- Broil for 2–3 minutes for a golden, slightly crispy top
- Remove from oven and let rest for 5–10 minutes
- Garnish with parsley if desired
- Slice into portions and serve warm
Recipe Information
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Servings: 6
- Cuisine: American
- Course: Main Course
Nutrition Information (Approximate)
- Calories: 360 kcal
- Protein: 30 g
- Carbohydrates: 6 g
- Fat: 24 g
- Fiber: 2 g
- Sugar: 2 g
- Sodium: 620 mg
Ingredients
Method
- Preheat your oven to 375°F (190°C) and lightly grease a baking dish
- Heat olive oil in a large skillet over medium heat
- Add diced onion, celery, and mushrooms, cooking for 5–6 minutes until softened
- Stir in minced garlic and cook for 30 seconds until fragrant
- Add cauliflower rice and sauté for 3–4 minutes to reduce moisture
- Add cooked turkey to the skillet and mix everything evenly
- Season with thyme, paprika, salt, and pepper
- In a mixing bowl, whisk together heavy cream, eggs, and sour cream until smooth
- Stir in half of the mozzarella and cheddar cheese into the creamy mixture
- Combine the creamy mixture with the turkey mixture and stir well
- Transfer everything into the prepared baking dish
- Spread evenly using a spatula
- Sprinkle remaining mozzarella, cheddar, and parmesan cheese over the top
- Bake for 25–30 minutes until the casserole is set and cheese is melted
- Broil for 2–3 minutes for a golden, slightly crispy top
- Remove from oven and let rest for 5–10 minutes
- Garnish with parsley if desired
- Slice into portions and serve warm
Notes
- Protein: 30 g
- Carbohydrates: 6 g
- Fat: 24 g
- Fiber: 2 g
- Sugar: 2 g
- Sodium: 620 mg
Flavor Profile Breakdown
- Creamy and rich base
- Savory turkey flavor
- Mild earthiness from mushrooms
- Light herb aroma
- Cheesy and comforting finish
Tips for Best Results
- Use cooked turkey to save time and enhance flavor
- Sauté cauliflower rice first to remove excess moisture
- Use full-fat dairy for best texture
- Let casserole rest before cutting
- Broil briefly for a golden top
Variations & Substitutions
- Use chicken instead of turkey
- Add broccoli or spinach for extra nutrients
- Replace cauliflower rice with spaghetti squash
- Use Gruyere or Swiss cheese for deeper flavor
- Add bacon for extra richness
Mistakes to Avoid
- Using watery cauliflower rice
- Skipping seasoning
- Overbaking causing dryness
- Not draining vegetables properly
- Cutting immediately without resting
Serving Suggestions
- Serve with a fresh green salad
- Pair with roasted vegetables
- Add avocado slices on top
- Serve with keto bread
- Enjoy as a standalone meal
Storage Tips
- Store in airtight container in fridge for up to 4 days
- Freeze for up to 2 months
- Reheat in oven for best texture
- Microwave for quick reheating
Why You’ll Love This Recipe
- Low-carb and keto-friendly
- High protein and filling
- Perfect for leftover turkey
- Easy one-dish meal
- Creamy and satisfying
How to Serve
- Serve hot directly from the baking dish
- Garnish with fresh herbs
- Add extra cheese if desired
- Pair with light sides
- Ideal for lunch or dinner
FAQs
Can I use leftover turkey for this recipe?
Yes, leftover turkey works perfectly and saves time.
Can I substitute chicken for turkey?
Yes, chicken is a great alternative and works the same way.
Is this casserole keto-friendly?
Yes, it uses low-carb ingredients like cauliflower rice and cheese.
Can I freeze this casserole?
Yes, it freezes well for up to 2 months.
How do I prevent it from being watery?
Cook the cauliflower rice beforehand to remove moisture.
Can I make it ahead of time?
Yes, assemble it and refrigerate before baking.
What cheese works best?
Mozzarella, cheddar, and parmesan create the best texture and flavor.
Can I add more vegetables?
Yes, broccoli, spinach, or zucchini work great.
How long does it last in the fridge?
Up to 4 days when stored properly.
Is it good for meal prep?
Absolutely, it reheats well and stays flavorful.



