In electric skillet add ground beef with chopped onion, cook until meat is done/onion is tender. Drain.

Add ingredients in the skillet in this order: First layer - Meat Second Layer - Rice Third Layer - Corn Fourth Layer - Tomatoes, sauce or puree

Place lid on skillet, set control to medium/high. You MIGHT have to add a little water (1/2 to 3/4 cup) to "casserole", so it doesn't burn or become too dry. Cook until rice is tender... takes about 5-10 minutes in my skillet. top with shredded cheese.