Slice hot dogs about half an inch thick and fry over medium heat until desired doneness.
Grease 13x9 pand and sprinkle with hot dog buns torn into bite size pieces. Sprinkle onions on top of the buns. Pour two cans of your favorite chili on top of the bread and onions. Spread the mustard over the chili and top with the cheese. Put in the oven at 400 degrees and cook for thirty minutes or until cheese is browned and bubbly.