Dog Gones

1 lb hot dogs, cut in pieces
3/4 lb cheddar cheese, cubed
3 eggs, hard boiled
3 tbsp onions, chopped
3 tbsp mayonnaise
1 tbsp ketchup
8-10 hot dog buns

Mix all ingredients except for buns. Put mixture in buns and wrap individually in foil. YOU CAN FREEZE THESE. If frozen thaw partially before cooking. Bake at 400 degrees for 15 minutes, or until cheese is melted.