Place bread loaves, at least 2 inches apart, on cookie sheet. With sharp knife, make slits on top of each loaf. In small bowl, stir remaining 3 tablespoons butter, reserved 2 teaspoons taco seasoning mix and the garlic powder until well mixed. Brush seasoning mixture on tops and sides of each loaf. Bake 26 to 30 minutes or until golden brown. Cool 15 minutes.