Description
A rich and comforting casserole made with ground beef, mushrooms, caramelized onions, and Swiss cheese, perfect for chilly weeknights or casual gatherings.
Ingredients
Scale
- 1 lb (450 g) ground beef
- 1 medium onion, diced
- 8 oz (225 g) mushrooms, sliced
- 3 cloves garlic, minced
- 1 cup (240 ml) beef broth
- 1 tbsp Worcestershire sauce
- 2 tbsp soy sauce
- 1 tbsp Dijon mustard
- 6 oz (170 g) Swiss cheese, shredded
- 1 cup (240 g) sour cream
- 4 hamburger buns, torn into pieces
- 2 tbsp olive oil
- Salt, to taste
- Black pepper, to taste
- 1 tbsp fresh parsley, chopped (optional garnish)
Instructions
- Preheat oven to 375°F (190°C).
- Heat 1 tbsp olive oil in a large skillet over medium-high heat. Add the torn hamburger bun pieces and toast lightly for 2–3 minutes until just golden; transfer to a bowl and set aside.
- In the same skillet, add the remaining 1 tbsp olive oil. Sauté the diced onion until soft and translucent, about 4–5 minutes.
- Add sliced mushrooms and cook until they release their moisture and begin to brown, about 6–8 minutes.
- Stir in minced garlic and cook for 30–60 seconds until fragrant.
- Push vegetables to the side, add the ground beef to the skillet, and cook until browned and no longer pink, breaking it up with a spoon. Season with salt and pepper.
- Stir in beef broth, Worcestershire sauce, soy sauce, and Dijon mustard. Let simmer for 2–3 minutes to reduce slightly and meld flavors. Taste and adjust seasoning.
- Remove from heat. Stir in sour cream until well combined, then fold in half of the shredded Swiss cheese.
- Transfer the mixture to a lightly greased 9×9-inch baking dish. Sprinkle the toasted bun pieces evenly on top, then top with the remaining Swiss cheese.
- Bake in the preheated oven for 12–15 minutes, or until cheese is melted and casserole is bubbling and golden at the edges.
- Remove from oven, let rest for 5 minutes. Garnish with chopped fresh parsley before serving.
Notes
This casserole is energy-dense and rich in protein. Consider using leaner meat and low-sodium alternatives to reduce fat and sodium.
- Prep Time: 20 minutes
- Cook Time: 40 minutes
- Category: Main Course
- Method: Baking
- Cuisine: American
Nutrition
- Serving Size: 1 serving
- Calories: 810
- Sugar: 5g
- Sodium: 1200mg
- Fat: 61g
- Saturated Fat: 24g
- Unsaturated Fat: 30g
- Trans Fat: 0g
- Carbohydrates: 32g
- Fiber: 3g
- Protein: 44g
- Cholesterol: 90mg