Preheat the oven to 375°F (190°C).
In a mixing bowl, combine the softened butter, minced garlic, dried parsley, salt, and black pepper. Mix until well combined.
Slice the baguette or Italian bread in half lengthwise.
Spread the garlic butter mixture evenly over both halves of the bread using a spatula.
Sprinkle the shredded mozzarella cheese over the buttered bread, followed by the grated Parmesan cheese.
Place the bread on a baking sheet and bake in the preheated oven for about 10-15 minutes, or until the cheese is melted and bubbly, and the edges are golden.
Remove from the oven, let cool for a minute, then cut into slices and serve warm.
For extra flavor, you can add crushed red pepper flakes or fresh herbs like basil or oregano to the butter mixture.
This cheesy garlic bread pairs wonderfully with marinara sauce for dipping. Enjoy!