01 - Preheat the oven to 400°F and line a baking sheet with parchment paper.
02 - In a small bowl, combine softened butter, minced garlic, chopped parsley, sea salt, and black pepper; mix until smooth.
03 - Generously spread the garlic butter mixture over each bread slice.
04 - If desired, sprinkle grated Parmesan cheese evenly over the buttered bread slices.
05 - Place the prepared bread slices on the lined baking sheet in a single layer.
06 - Bake for 8 to 10 minutes until edges turn golden and butter bubbles; optionally broil for 1 to 2 minutes for extra crispiness, watching closely to avoid burning.
07 - Serve hot, optionally garnished with extra parsley.