Preheat your oven to 204 °C (200 °C). Slice the loaf of bread in half lengthwise.

In a medium bowl, combine the softened butter, minced garlic, chopped parsley, chives, sea salt, and black pepper. Mix thoroughly until well incorporated.

Generously spread the garlic herb butter mixture evenly over the cut surfaces of both bread halves.

Place the bread halves, butter-side up, on a baking sheet. If using, sprinkle the grated Parmesan cheese over the buttered surfaces.

Bake for 10-15 minutes, or until the edges are golden brown and the butter is bubbly. For crispier bread, bake for an additional 2-3 minutes, watching closely to prevent burning.

Remove from the oven, let cool slightly, then slice into individual servings. Serve immediately.