Bacon Cheese Puffs

1 pound sliced bacon

2 ½ cups shredded Cheddar cheese

2 tablespoons prepared mustard

1 cup mayonnaise

1 pound sliced pumpernickel party bread

Place bacon in a large, deep skillet. Cook over medium-high heat until evenly brown. Drain, crumble and set aside.

Preheat oven to broil.

In a medium bowl combine the bacon, cheese, mustard and mayonnaise. Stir well. Arrange party bread on a cookie sheet. Spoon mixture onto each slice of bread.

Broil for 5 minutes, or until bubbly.