Tuna Melt!! Ingredients 20 ounces tuna in water or oil, drained (four 5-ounce cans) 1 medium onion,...

Tuna Melt!!

Ingredients
20 ounces tuna in water or oil, drained (four 5-ounce cans)
1 medium onion, chopped (about ½ cup)
½ celery stalk, chopped (about ¼ cup)
1 clove garlic, minced (or ½ teaspoon ready minced garlic)
1 tablespoon parsley, chopped
5 tablespoon mayonnaise
3 tablespoon olive oil, divided into 2 tablespoons and 1 tablespoon
½ cup mozzarella, shredded
salt and pepper, to taste
12 slices bread
softened butter