Preheat Oven: Set to 375°F (190°C).
Prepare Bread: Slice the loaf horizontally or into 1-inch thick pieces without cutting all the way through.
Make Garlic Butter: In a bowl, mix softened butter, minced garlic, parsley, salt, pepper, and chili flakes (if using).
Spread Butter: Generously coat the bread crevices or slices with the garlic butter using a spoon or pastry brush.
Add Cheese (Optional): Sprinkle Parmesan cheese over the top.
Bake: Wrap in foil (for softer bread) or place directly on a baking sheet (for crispier edges). Bake for 10–12 minutes until golden.
Broil (Optional): For extra crispiness, broil for 1–2 minutes at the end.
Serve: Garnish with extra parsley and serve warm.