Ingredients1 lb (450 g) ground beef or thinly sliced steak1 tbsp olive oil or butter1/2 onion, finely chopped1/2 green bell pepper, chopped1 cup shredded mozzarella or provolone cheese4–6 large slices provolone or mozzarella cheese (for rolling)Salt & black pepper to taste1/2 tsp garlic powderOptional: sliced mushroomsInstructionsCook the filling:Heat oil in a skillet over medium heat. Add onion and bell pepper (and mushrooms if using). Sauté until soft.Add beef:Add beef to the pan. Season with salt, pepper, and garlic powder. Cook until browned. Remove from heat.Melt the cheese base:On a parchment-lined baking sheet, place the large cheese slices in small rectangles. Bake at 400°F (200°C) for 5–7 minutes until melted and bubbly.Fill & roll:Let the cheese cool for about 30 seconds. Spoon beef mixture and shredded cheese onto each melted cheese slice. Carefully roll them up.Serve:Garnish with fresh parsley if desired and serve warm.TipsFor extra crispiness, return the rolled pieces to the oven for 2–3 minutes.Dip in keto-friendly garlic sauce or ranch.If you want, I can give you a sauce recipe or an air fryer version — just tell me!