Description

A rich and comforting casserole combining savory ground beef, tender mushrooms, and a creamy cheesy sauce baked to golden perfection—ideal for a cozy family dinner.

Ingredients

1 lb (450g) ground beef

8 oz (225g) mushrooms, sliced

1 small onion, finely chopped

2 cloves garlic, minced

1 cup sour cream or Greek yogurt

1 cup shredded cheddar cheese

1/2 cup grated Parmesan cheese

1/2 cup milk

2 tablespoons olive oil

1 teaspoon dried thyme

Salt and pepper, to taste

2 cups cooked pasta or mashed potatoes (optional, for serving)

Cook Mode Prevent your screen from going dark

Instructions

Preheat the oven to 375°F (190°C).
In a large skillet, heat olive oil over medium heat. Add onion and garlic, sautéing until fragrant and translucent, about 3 minutes.
Add ground beef, breaking it apart with a spoon, and cook until browned and no longer pink. Drain excess fat if necessary.
Stir in sliced mushrooms and cook until softened, about 5 minutes.
Remove skillet from heat and stir in sour cream, milk, thyme, salt, and pepper until well combined.
Transfer the beef and mushroom mixture to a baking dish. Sprinkle cheddar and Parmesan evenly over the top.
Bake uncovered for 20-25 minutes, or until the cheese is melted, bubbly, and golden brown.
Let rest for 5 minutes before serving. Enjoy as is or over cooked pasta or mashed potatoes for a heartier meal.

Notes

You can substitute cremini or shiitake mushrooms for a deeper flavor.

Add spinach or diced bell peppers to boost nutrition and freshness.

For a lower-carb option, serve without pasta or mashed potatoes, paired with steamed veggies or salad.

Swap cheddar cheese for mozzarella for a milder cheesy flavor.

Leftovers can be stored in an airtight container in the fridge for up to 3 days.
Reheat in the oven covered with foil at 350°F (175°C) for about 15 minutes, or microwave.
Ground turkey or chicken can be used as a leaner meat alternative.
Greek yogurt is a great substitute for sour cream for a healthier option.
The dish can be assembled a day ahead and baked later, adding extra cooking time if cold.
For a dairy-free version, use dairy-free sour cream, cheese, and milk substitutes like almond or oat milk.

Prep Time: 15 minutes
Cook Time: 30 minutes
Category: Casserole
Method: Baking
Cuisine: American

Nutrition

Serving Size: 1 serving
Calories: 450
Sugar: 3g
Sodium: 480mg
Fat: 28g
Saturated Fat: 12g
Unsaturated Fat: 14g
Trans Fat: 0g
Carbohydrates: 15g
Fiber: 2g
Protein: 30g
Cholesterol: 90mg