Preheat the oven to 400 degrees
In a large skillet, cook ground beef until done. Drain.
Stir in taco seasoning, corn (drained), canned tomatoes or Rotel (not drained) and French fried onions. Spread into the bottom of a 2 1/2 Quart size dish or a 9X13 dish.
Prepare muffin mix according to package directions (if you use a 9X13 you may need 2 boxes of Jiffy).
Spread the muffin mix on top of the beef mixture to cover it. Bake uncovered at 400 degrees for 20 minutes or until cornbread is golden on top.
Top with cheese and remaining French fried onions. Return to oven until cheese is melted about 2 - 3 minutes. Serve with sour cream. :)
