If you don't have cooked rice, make some ahead of time.
Preheat your oven to 400F and prep your ingredients.
Place the peppers cut-side up in a baking dish and add one cup of water.
Sauté oil, onion, and chopped pepper tops over medium-high heat for 5 minutes.
Add ground beef and cook until browned, about 8 minutes.
Stir in garlic, crushed tomatoes, Worcestershire sauce, and Italian seasoning.
Stir in cooked rice and one cup of cheese, season with salt & pepper.
Spoon the mixture into the peppers.
Cover with foil and bake for 40 minutes.
Sprinkle remaining cheese on top and bake uncovered for another 5-10 minutes.