Tunaburgers

1 (7 ounce) can chunk white tuna, packed in water
1 cup celery, chopped fine
1 small onion, chopped fine
1 1/2 cup American cheese
1/2 cup Velveeta® cheese
1/2 cup chopped green or black olives
1/2 cup chopped sweet pickles
1/4 cup mayonnaise
2 hardboiled eggs, chopped
Salt, to taste
Pepper, to taste

Spread mix on hamburger-style buns. Heat 15 to 20 minutes at 350 degrees F.