The ingredients for beef and rice stuffed peppers vary by recipe, but all recipes should include ground beef, long grain rice and bell peppers. Some common additional ingredients include onions, tomato sauce, garlic and parsley.
BettyCrocker.com offers a simple recipe for stuffed peppers. To make this recipe, cut the tops off of 4 large bell peppers. Remove the seeds and stems and blanch the peppers in boiling water. In a skillet, cook 1 pound of lean ground beef and 2 tablespoons chopped onion for eight to 10 minutes or until the beef is browned. Add 1 cup cooked rice, 1 teaspoon salt, 1 finely chopped clove of garlic and 1 cup of tomato sauce, cooking until hot.
Preheat an oven to 350 degrees Fahrenheit. Fill each pepper with beef mixture, then place the peppers upright in a baking dish. Pour additional tomato sauce over the peppers, cover with tinfoil and bake for about 10 minutes. Uncover the peppers and bake for another 15 minutes. Sprinkle with Mozzarella cheese before serving.
FoodNetwork.com's recipe for Mr. John's meat--stuffed bell peppers is similar, but calls for ground pork in addition to ground beef. This recipe also adds chopped bell peppers and chili flakes to the stuffing mixture. Epicurious.com's recipe adds an egg to the ground beef.