Try These.....

2 Can Tuna
1 cup shred. cheese
1-2 Tablespoons grated onion (use juice also)
2-3 Tablespoons fine chopped celery
2-3 Tablespoons Low-fat Mayo

Add all ingredients together in a bowl

Put 2-3 Tablespoons on Bread or Buns
Bake at 350 Degrees 8-10 min

Darn Good