Wash and cut the top off the bell peppers and clean out the seeds.
Brown ground beef, onion, and add taco seasoning mix packet
In a large bowl mix together cooked ground beef with onions and taco seasoning along with drained corn, rotel, rice, beans, tomato sauce, cumin and 1/2 cup cheese, (save the other 1/2 cup of cheese to sprinkle on top of the peppers once they are done.
Fill the peppers with the meat mixture and place in a greased slow cooker.
Cook on LOW 5-6 hours add cheese on top and serve.