1 lb. ground beef, not browned
1 med. onion, finely chopped
1/2 tsp. salt
1/4 tsp. pepper
4 tbsp. ketchup
1 tbsp. prepared mustard
1 tsp. horseradish
1 or 2 dashes Tabasco sauce
1/2 to 1 c. Velveeta cheese that has been cut up into small pieces

Mix first 8 ingredients together and mix well. Add Velveeta cheese cubes and mix. Spread on open halves of hamburger or hot dog buns, spreading and covering edges well so they won't burn. Place buns close together on cookie sheets and place under the broiler. Broil until meat is brown and cheese pieces have melted and browned, about 10 to 12 minutes. Broil at 350 degrees. This is a good way to use up buns that have gotten dry.