In a small bowl, stir butter, garlic, garlic powder, salt, pepper and parsley together until well combined.
Stir in cheeses.
Cut french bread evenly in half lengthwise and remove any excess crumbs.
Divide butter mixture in half and spread in an even layer across the two cut sides of the loaves.
Place garlic bread on foil lined baking sheet and broil on high until brown and bubbly and melted. You may have to move the pan around to get it to broil evenly. Cut into 24 skinny pieces, 12 per side. 1 serving is 2 pieces.