Preheat oven to 400°F (200°C).
In a small bowl, mix the softened butter, minced garlic, chopped parsley, and Italian seasoning.
Spread the garlic butter evenly over both bread halves.
Sprinkle the mozzarella and Parmesan cheeses generously on top.
Place the bread halves on a baking sheet and bake for 12–15 minutes or until the cheese is melted and bubbly.
Broil for 1–2 minutes to brown the top slightly, if desired.
Slice and serve warm.