Preheat oven to 350°F.
Split gluten-free rolls, lengthwise. Place bread, cut-side up, on a baking sheet.
Combine butter, minced garlic or garlic powder, parsley, black pepper, and salt in a small bowl. Mix until creamy.
Spread the garlic butter on the bread. For cheesy bread: sprinkle the cheese over the bread.
Bake until golden brown, about 8 minutes for slices and 12 minutes for rolls. For extra-crispy garlic bread, broil for one to two minutes.
Remove bread from the oven. Let cool for a few minutes, slice, and enjoy.