Preheat oven to 400 degrees.
Combine the mayo, 1 cup of mozzarella cheese, garlic, and butter. Spread on each inside half of the bread. Sprinkle evenly with the remaining shredded mozzarella. Sprinkle with Italian seasoning.
Sprinkle evenly with the remaining shredded mozzarella. Sprinkle with Italian seasoning.
Bake at 400 degrees for 15-20 minutes, or until the cheese is lightly browned and bubbly.