Keto Beef and Mushroom Casserole Recipe
This Keto Beef and Mushroom Casserole is a rich and comforting dish perfect for low-carb diets. Combining savory ground beef, tender mushrooms, and creamy cheese, it’s an easy meal that satisfies hearty cravings without the carbs.

Ingredients
- 1 pound ground beef
- 2 cups sliced mushrooms
- 1 cup heavy cream
- 1 cup shredded cheddar cheese
- 1/2 cup beef broth
- 1 small onion, diced
- 2 cloves garlic, minced
- 1 teaspoon thyme
- Salt and pepper to taste
- Olive oil for cooking
Instructions
- Step 1: Preheat your oven to 375°F (190°C).
- Step 2: In a large skillet, heat olive oil over medium heat. Add the diced onion and minced garlic, cooking until softened.
- Step 3: Add the ground beef and cook until browned, then drain any excess fat.
- Step 4: Stir in the sliced mushrooms, beef broth, heavy cream, thyme, salt, and pepper. Cook for 5-7 minutes until the mushrooms are tender.
- Step 5: Transfer the mixture to a greased 9×9-inch baking dish and top with shredded cheddar cheese.
- Step 6: Bake for 20-25 minutes or until the cheese is melted and bubbly. Let cool slightly before serving.
Tips & Variations
- Use a mix of mushrooms like cremini or shiitake for extra depth of flavor.
- Swap cheddar for mozzarella or gouda to change the cheese profile.
- For added texture, sprinkle crushed pork rinds on top before baking for a crunchy crust.
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 dish can also be frozen for up to one month; thaw overnight in the fridge before reheating.
How to Serve

Serve this delicious recipe with your favorite sides.
FAQs
Can I use a different type of cheese?
Yes, you can substitute cheddar with other cheeses like mozzarella, gouda, or Monterey Jack depending on your preference and what you have on hand.
Is this recipe suitable for meal prep?
Absolutely. This casserole reheats well and makes a convenient, keto-friendly meal to prepare ahead for busy days.
PrintKeto Beef and Mushroom Casserole Recipe
A rich and creamy Keto Beef and Mushroom Casserole, perfect for low-carb diets. This hearty dish combines ground beef, mushrooms, and a savory blend of cream and cheddar cheese baked to bubbly perfection.
- Prep Time: 15 minutes
- Cook Time: 30 minutes
- Total Time: 45 minutes
- Yield: 4 servings 1x
- Category: Main Dish
- Method: Baking
- Cuisine: American
- Diet: Low Carb
Ingredients
Beef Mixture
- 1 pound ground beef
- 2 cups sliced mushrooms
- 1 small onion, diced
- 2 cloves garlic, minced
- 1 teaspoon thyme
- 1/2 cup beef broth
- 1 cup heavy cream
- Salt and pepper to taste
- Olive oil for cooking
Topping
- 1 cup shredded cheddar cheese
Instructions
- Preheat Oven: Preheat your oven to 375°F (190°C) to prepare for baking the casserole.
- Sauté Aromatics: In a large skillet, heat olive oil over medium heat. Add diced onion and minced garlic, cooking until softened and fragrant, about 3-4 minutes.
- Cook Beef: Add ground beef to the skillet and cook until browned, breaking it apart as it cooks. Drain excess fat to keep the casserole from becoming greasy.
- Add Mushrooms and Liquids: Stir in sliced mushrooms, beef broth, heavy cream, thyme, salt, and pepper. Cook the mixture for 5-7 minutes, allowing the mushrooms to soften and the flavors to blend.
- Assemble Casserole: Transfer the beef and mushroom mixture into a greased 9×9-inch baking dish. Evenly sprinkle the shredded cheddar cheese on top.
- Bake: Place the dish in the preheated oven and bake for 20-25 minutes, until the cheese melts and becomes bubbly and golden.
- Rest and Serve: Remove from oven and let the casserole cool slightly before serving to allow it to set.
Notes
- For a creamier texture, use full-fat heavy cream.
- Feel free to substitute cheddar with Monterey Jack or mozzarella for a different flavor.
- To make this dish dairy-free, consider using coconut cream and a vegan cheese alternative.
- Adjust seasoning according to taste before baking.
- This casserole can be prepared ahead of time and refrigerated before baking.
Keywords: Keto, Beef Casserole, Mushroom, Low Carb, Gluten Free, Dinner, Easy Recipe

