High-Protein Cheesy Beef Mushroom Casserole

ByHannah Peterson

This is cheesy beef casserole — seasoned ground beef with mushrooms, peppers, and a golden layer of melted cheese. It’s a hearty, one-pan, high-protein dinner.

Why You’ll Love This Recipe

  • Bubbling cheese and savory beef exactly like your photo
  • Extremely high protein and filling
  • Easy one-dish meal
  • Great for meal prep and leftovers
  • Keto and family-friendly

Ingredients (Serves 6)

  • 2 lbs (900g) ground beef
  • 8 oz (225g) mushrooms, sliced
  • 1 green bell pepper, diced
  • 1 small onion, diced
  • 2 cloves garlic, minced
  • 1 tsp Italian seasoning
  • Salt & pepper to taste
  • 2 cups (200g) shredded mozzarella or cheddar cheese
  • Optional: cream cheese for extra creaminess

Instructions

  1. Preheat oven to 375°F (190°C).
  2. In a large skillet, brown ground beef with onion and garlic. Drain excess fat.
  3. Add mushrooms and bell pepper. Cook until softened.
  4. Season with Italian seasoning, salt, and pepper.
  5. Transfer to a baking dish. Top with shredded cheese.
  6. Bake 15–20 minutes until cheese is bubbly and golden.

Prep Time: 10 minutes Bake Time: 15–20 minutes Total Time: 25–30 minutes

Nutrition (Per Serving)

  • Calories: ~380
  • Protein: 35g (high)
  • Total Carbs: 6g
  • Net Carbs: 5g
  • Fat: 24g

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