2 cans tuna
2 tbsp. chopped onion
1 c. chopped celery
1 c. American cheese, cut in sm. squares
8 hamburger buns
1 cube butter, melted
Mayonnaise

Mix first 4 ingredients. Add enough mayonnaise to just hold together. Melt butter, spread on both sides of buns. Spread on tuna mixture. Bake in a large brown paper bag at 350 degrees for 15 minutes.