Tuna Burgers
["1 (7 oz.) can tuna, drained", "1/2 c. shredded cheese", "3 hard-boiled eggs, chopped", "1 Tbsp. onion, finely chopped", "1/2 c. mayonnaise"]
["Mix all ingredients together and place on bun half.", "Toast in oven under broiler until bubbly."]
["tuna", "shredded cheese", "eggs", "onion", "mayonnaise"]