In a large skillet over medium high heat, add in the ground beef and onions. Cook until no pink is noted. Drain off all excess grease then add in the tomato sauce, ketchup, mustard, chili seasoning and Worcestershire sauce. Stir until well combined and then simmer on low heat until mixture is hot.

In a 9x13 casserole dish place the bun in a row and then place the hot dog weenies into the bun. Top with chili and then shredded cheese. Cover with tin foil and bake at 350 degrees for 20-25 minutes until the cheese is melted. Serve & enjoy!