01 - Set the oven to 400°F and line a baking sheet with parchment paper.
02 - Slice the baguette lengthwise in half and place both halves cut side up on the prepared baking sheet.
03 - In a medium bowl, combine the softened butter, minced garlic, parsley, salt, black pepper, Italian herbs if using, and Parmesan cheese if desired. Stir until smooth and thoroughly blended.
04 - Spread the garlic butter evenly over the cut sides of both bread halves.
05 - Bake in the preheated oven for 12 to 15 minutes until the edges turn golden and the butter is melted and bubbly.
06 - For extra crispness, broil the bread for 1 to 2 minutes, monitoring closely to prevent burning.
07 - Remove from oven, allow to cool slightly, then slice into portions and serve warm.