Preheat oven to 375°F (190°C).
In a small saucepan or microwave-safe bowl, melt the butter.
In a mixing bowl, combine the melted butter, minced garlic, chopped herbs, salt, and pepper. Mix well.
Slice the bread lengthwise.
Spread the garlic butter mixture evenly over both halves of the bread.
Sprinkle the shredded mozzarella and Parmesan cheese evenly over the garlic butter.
Place the bread halves on a baking sheet lined with parchment paper (optional).
Bake for 10-12 minutes, or until the cheese is melted, bubbly, and lightly golden brown.
Remove from the oven and drizzle with olive oil.
Let cool slightly before slicing and serving.