Low-carb, high-protein casserole with thinly sliced beef, sautéed peppers and onions, and creamy melted cheese, perfect for keto-friendly meals or hearty dinners.
1 pound thinly sliced beef (sirloin, ribeye, or flank steak)
1 tablespoon olive oil
1 medium green bell pepper, sliced
1 medium red bell pepper, sliced
1 medium onion, sliced
2 cloves garlic, minced
1 teaspoon salt
1/2 teaspoon black pepper
1/2 teaspoon smoked paprika (optional)
1 tablespoon Worcestershire sauce (optional)
4 ounces cream cheese, softened
1 cup shredded mozzarella cheese
1/2 cup shredded provolone cheese
2 large eggs
Fresh parsley or green onions, chopped for garnish
Preheat oven to 375°F. Sauté onions and peppers in olive oil for 5–7 minutes. Add garlic for last minute.
Cook beef with seasonings for 4–6 minutes until browned.
Whisk eggs and cream cheese until smooth, fold in cheeses.
Mix beef and vegetables with cheese mixture, transfer to greased dish, top with remaining cheese.
Bake 20–25 minutes until set and golden. Garnish and serve.
Add mushrooms or spinach for extra veggies. Can prepare ahead and refrigerate before baking.