2 cans tuna fish
2 stalks celery
1 sm. onion
Salad dressing (enough to mix)
1/2 lb. cheese, cut in cubes

Mix all ingredients, except cheese. Spread butter on buns. Put tuna mixture on buns, then put cheese cubes on tuna. Roll in foil. Bake at 425 degrees for 10 to 15 minutes.