Cheeseburger Bites

Directions

1. 1
   In a bowl, combine egg yolk, ground beef, onio , salt and pepper.
2. 2
   Shape mixture by teaspoonfuls into 24 balls.
3. 3
   Remove crusts from bread; roll flat and cut into 1-1/2-inch rounds.
4. 4
   Place meatballs on bread rounds; make a depression in each ball and fill with a cube of cheese, making sure bread is coverd with meat mixture.
5. 5
   Place on baking sheet.
6. 6
   Broil in preheated oven about 5 inches from heat 3-5 minutes or until no pink remains.
7. 7
   Garnish with ketchup, mustard, sliced green onions or sliced dill pickles, if desired.