This hearty, one-dish casserole features seasoned ground beef, colorful bell peppers, mushrooms, and onions smothered in melted cheese. It’s a flavorful, satisfying meal that’s high in protein and low in carbs, perfect for family dinners or meal prep.
Why You’ll Love This Recipe
- Very high protein from beef and cheese
- Loaded with colorful veggies for flavor and nutrients
- One-pan easy with minimal cleanup
- Make-ahead and freezer-friendly
- Tastes like fajitas without the carbs
Ingredients (Serves 6)
- 2 lbs (900g) ground beef (80/20 or lean)
- 3–4 bell peppers (red, green, yellow), sliced
- 8–10 oz (225–280g) mushrooms, sliced
- 1 large onion, sliced
- 3–4 cloves garlic, minced
- 2 cups (200g) shredded Mexican blend or cheddar cheese
- 2 tbsp olive oil or avocado oil
- 1 tbsp chili powder
- 2 tsp cumin
- 1 tsp paprika
- 1 tsp oregano
- 1 tsp salt (or to taste)
- ½ tsp black pepper
- Optional: ½ tsp cayenne or red pepper flakes for heat
- Fresh cilantro or parsley for garnish
Instructions
- Preheat oven to 375°F (190°C).
- Heat oil in a large skillet over medium-high heat. Add ground beef and cook until browned, breaking it up (6–8 minutes). Drain excess fat if needed.
- Add sliced onions, bell peppers, mushrooms, and garlic. Cook 5–7 minutes until vegetables are tender-crisp.
- Stir in chili powder, cumin, paprika, oregano, salt, and pepper. Cook 1–2 more minutes until fragrant.
- Transfer the mixture to a 9×13 glass baking dish. Sprinkle shredded cheese evenly over the top.
- Bake 15–20 minutes until cheese is melted, bubbly, and lightly golden.
- Let rest 5 minutes. Garnish with fresh cilantro or parsley and serve.
Prep Time: 10 minutes Cook Time: 25–30 minutes Total Time: 35–40 minutes
Nutrition (Per Serving)
- Calories: ~420
- Protein: 38g (very high)
- Total Carbs: 10g
- Net Carbs: 7g
- Fat: 27g
