Tuna Or Chicken Burgers
["1 (7 oz.) can tuna, flaked or 1 c. cut-up cooked chicken", "1 c. chopped celery", "1 small onion, minced", "1/2 c. diced Cheddar cheese", "1/4 c. mayonnaise", "salt and pepper", "6 hamburger buns"]
["Mix filling ingredients.", "Fill buttered buns with mixture. Wrap in aluminum foil and refrigerate.", "Just before serving, heat at 350\u00b0 for 15 to 20 minutes.", "Makes 6 servings."]
["tuna", "celery", "onion", "Cheddar cheese", "mayonnaise", "salt", "buns"]