In a skillet, brown ground meat and 1/4 of the chopped onion. Once cooked, drain off excess fat. Add all remaining chili topping ingredients, stir, and cook for 15-20 minutes. Add salt and pepper, to taste.
Slit frankfurters down the center but not all the way through. Broil or grill over HOT flame until cooked through. Remove, place in buns. Spread with mustard and sprinkle with onions. Top with chili mixture. Makes 8 to 10 chili dogs. Enjoy!