Swiss Tuna Bunny - cooking recipe

Ingredients

2 cans (6 1/2 oz.) chunk tuna, drained and flaked, bone and dark skin removed
1/2 lb. Swiss cheese, diced in small squares
1/2 c. mayonnaise
1 small onion, finely diced

Preparation

Mix thoroughly and spread in 8 hamburger rolls.
Wrap individually in aluminum foil and heat 20 minutes in preheated 350\u00b0 oven.