01 - Set the oven to 400°F and line a baking sheet with parchment paper.
02 - Slice the loaf lengthwise into two halves and arrange cut side up on the baking sheet.
03 - In a mixing bowl, blend softened butter with minced garlic, parsley, salt, and pepper until uniform.
04 - Spread the garlic butter mixture evenly onto the cut surfaces of the bread halves.
05 - If desired, uniformly sprinkle grated Parmesan cheese over the buttered bread.
06 - Place in the oven and bake for 10 to 12 minutes until edges are crisp and golden.
07 - Optionally broil for 1 to 2 minutes, monitoring carefully to avoid burning.
08 - Remove from oven, slice into eight pieces, and serve warm.