Cheeseburger Bites

1 Egg yolk -- beaten
1/2 pound Lean ground beef
2 tb Grated onions
1/2 t Salt
1 dash pepper
6 slices Bread
2 cups Cheddar cheese, cut into cubes

In a bowl, combine egg yolk, ground beef, onion, salt and pepper. Shape mixture by teaspoonfuls into 24 balls.

Remove crusts from bread; roll flat and cut into 1 - 1/2 inch rounds.

Place meatballs on bread rounds; make a depression in each ball and fill with a cube of cheese, making sure bread is covered with meat mixture. Place on baking sheet.

Broil in preheated oven about 5 inches from heat 3 - 5 minutes or until no pink remains. Garnish with ketchup, mustard, sliced green onions or sliced dill pickles if desired.

Serves 12.