Yields as many sandwiches as you want!
Using a cookie cutter or a knife, cut out both types of bread into squares. With the sandwich filling, make into sandwiches.
Arrange sandwiches on a platter in a checkerboard pattern, alternating the white and pumpernickel breads.
Pierce olives and tomatoes with toothpicks and attach to the checkerboard.
Tips:
Use the crusts and scraps from the bread to make your own homemade croutons.