Tuna Melt Sandwiches
["3/4 c. chopped celery", "3/4 c. diced Cheddar cheese", "1 (6 oz.) can tuna, drained and flaked", "1 small onion, diced", "1/4 c. mayonnaise", "1/8 tsp. salt", "1/4 c. butter", "6 hamburg buns, split"]
["In a medium bowl, combine celery, cheese, tuna, onion, mayo and salt; set aside.", "Spread butter over the cut side of buns. Spread tuna mixture on bun bottom; replace top.", "Wrap in foil. Bake at 350\u00b0 for 15 minutes or until cheese is melted."]
["celery", "Cheddar cheese", "tuna", "onion", "mayonnaise", "salt", "butter", "buns"]