CLASSIC TUNA MELT

Tuna, 2 cans, drained

Onion, medium size, chopped

Celery, 1/2 a stalk, chopped

Garlic (1 clove), minced

Parsley, 1 tablespoon, chopped

Mayonnaise,

Olive Oil, 3 tablespoons, divided

Mozzarella, 1/3 cup, shredded

Salt,

Fresh Black Pepper,

Bread, sliced

Butter, softened