There’s something incredibly comforting about a creamy, cheesy casserole fresh out of the oven. And when it’s low-carb, packed with protein, and bursting with flavor, it’s a meal you’ll want on repeat—especially if you’re following a keto lifestyle.
This Keto Turkey Casserole is a game-changer for using up leftover turkey (hello, post-holiday meal prep!) while keeping things light and satisfying.
Golden-baked Gruyère cheese melts into tender turkey, earthy mushrooms, and aromatic sage, all wrapped in a rich, velvety sauce. The hint of cayenne adds just enough warmth to balance the creamy texture, making every bite irresistibly good.
Whether you’re meal-prepping for the week or need a quick, hearty dinner, this dish delivers big flavors without the carb crash.
Why You’ll Be Making This on Repeat?
- It’s an easy way to use up leftover turkey. No more boring reheated leftovers—this casserole transforms them into something spectacular.
- The flavors are rich, cozy, and deeply satisfying. Think creamy, cheesy, and slightly smoky with a touch of heat.
- It’s keto-friendly and perfect for meal prep. Low in carbs, high in protein, and easy to portion for the week.
- You can customize it to fit your taste. Love spice? Add extra cayenne. Prefer chicken? Swap it in!
- It’s the ultimate comfort food without the guilt. Creamy, cheesy goodness—without the heavy carbs.
Keto Turkey Casserole Recipe
Equipment
- Large skillet
- Mixing bowl
- Whisk
- Baking dish (8×8 or similar)
- Cheese grater
- Oven
Ingredients
- 1 tablespoon olive oil
- ½ onion diced
- 2 stalks celery finely diced
- 4 ounces sliced mushrooms
- 1 teaspoon minced garlic
- 1 tablespoon fresh diced sage or chopped parsley
- ¼ teaspoon cayenne pepper
- Salt and pepper
- 4 cups cooked turkey chopped
- 2 eggs beaten
- ½ cup heavy cream
- 6 ounces Gruyere cheese shredded
Instructions
- Preheat the oven to 375°F (190°C) and grease a baking dish.
- Sauté the veggies – heat olive oil in a skillet, add onions, celery, and mushrooms, and cook until softened. Add garlic, sage, cayenne, salt, and pepper.
- Combine the turkey – mix the cooked turkey with the sautéed vegetables in a bowl.
- Whisk the sauce – beat the eggs with heavy cream in a bowl, then stir into the turkey mixture.
- Fold in the cheese – mix in shredded Gruyère and transfer everything to the baking dish.
- Bake for 20–25 minutes until golden brown and bubbly.
- Rest for 5 minutes, then serve warm.
Nutrition Info:
| Nutrition | Value |
| Calories | 331.05kcal |
| Carbohydrates | 2.65g |
| Protein | 25.82g |
| Fat | 24.12g |
| Sugars | 1.02g |
| Sodium | 200.42mg |
Creative Variations for This Keto Turkey Casserole!
- Caramelized Onion Boost – Instead of just sautéing the onions, cook them low and slow in butter until golden brown. This adds a deep, slightly sweet contrast to the savory turkey and cheese.
- Smoky Depth – Swap regular salt for smoked sea salt or add a touch of smoked paprika. This brings a subtle BBQ-like richness that pairs beautifully with the Gruyère.
- Crunchy Topping (Still Keto!) – Mix crushed pork rinds with grated Parmesan and sprinkle over the casserole before baking. It gives that crispy, golden top without adding carbs.
- Briny Kick – Stir in a handful of chopped olives or capers for a tangy, salty bite that cuts through the creaminess.
- Umami Upgrade – Add a dash of white miso paste to the cream mixture. It enhances the overall depth of flavor, making the dish taste even more indulgent.
- Herb-Infused Dairy – Heat the heavy cream with a sprig of fresh thyme or rosemary before mixing it in. This infuses the sauce with an elegant, subtle earthiness.
- Fermented Flavor Bomb – A teaspoon of sauerkraut juice or apple cider vinegar in the egg mixture brightens up the entire dish, balancing the rich flavors without overpowering them.
John Lee’s love for cooking is deeply rooted in family tradition. Growing up, the men in his family took charge of the kitchen, turning every meal into a special occasion. From weekend barbecues to holiday feasts, food was more than sustenance—it was a way to connect.
Inspired by this upbringing, John developed a passion for creating dishes that bring people together. After meeting Joe Miller through mutual friends, he joined Food Landscape Insight to share his love for simple yet extraordinary cooking, crafting meals that tell a story and create lasting memories.
