Preheat oven: Set to 375°F (190°C) and place a baking sheet inside (5 minutes).
Make garlic butter: Combine butter, garlic, parsley, salt, and pepper in a bowl. Mix until smooth, optionally adding Parmesan or oregano (3-4 minutes).
Slice bread: Cut loaf in half lengthwise or into 1-inch slices. Score top for softer bread (2 minutes).
Spread butter: Apply garlic butter evenly over cut sides or slices (3 minutes).
Bake: Place on baking sheet and bake for 10-12 minutes until golden. Wrap in foil for softer bread (10-12 minutes).
Serve: Slice if needed, garnish with parsley or Parmesan, and serve hot (2 minutes).