Place the peppers onto a baking tray, and set aside.
In a large skillet, brown the sausage or ground beef and onions over medium-high heat with the red pepper flakes, salt, pepper, onion powder, and garlic powder.
Once the meat is cooked, pour in the rice, stewed tomatoes, tomato sauce, water, and shredded cabbage. Cover and let simmer over medium-low heat until the rice is cooked and the cabbage is tender.
If there is excess water once the rice is cooked, turn the heat up to medium-high and let it simmer off.
Place the beef mixture into the waiting cups that were made with the bell peppers. Top with cheese and pop onto your pre-heated pellet grill for about 30 minutes.