01 - Preheat the oven to 400°F and line a baking sheet with parchment paper.
02 - Slice the baguette in half lengthwise, then cut each half into three pieces, yielding six pieces total.
03 - Combine softened butter, minced garlic, chopped parsley, and salt in a bowl until evenly mixed.
04 - Spread the garlic butter evenly over the cut sides of the bread pieces.
05 - Sprinkle mozzarella and Parmesan cheeses evenly over the buttered bread and lightly season with black pepper.
06 - Place the bread cut side up on the prepared baking sheet and bake for 10 to 12 minutes until cheese is melted and edges are golden brown.
07 - Allow to cool for 2 minutes, then slice and serve warm.