As many pieces of bread as wanted
Same number of bologna
1 tomato
1 onion
Cheese
1 tbsp. mayonnaise per slice

Butter as many pieces of bread as desired. Place bologna on each slice; add one slice of tomato and onion to each. Place 1 tablespoon mayonnaise on top of each, 1/4 cheese and place on each piece of bread; now they are all stacked. Place in broiler for about 30 to 60 seconds. Bologna will curl up and cheese will melt. Now you have a "Bologna Boat".