1 c. turkey, chicken, or tuna
1 c. chopped celery
1/3 of a sm. onion
1/2 c. diced Cheddar cheese
1/4 c. mayonnaise
Salt and pepper
6 hamburger buns

Mix filling ingredients. Fill buttered buns with mixture. Place in aluminum foil. Refrigerate. Just before serving, heat at 350 degrees for 15-20 minutes.