Stir together butter and parmesan cheese in a small bowl
Spread 11/2 tsp. butter on 1 side of each bread slice.Place 4bread slices,buttered side down, on wax paper.Top with provolone and mozzarella cheese;top with remaining bread slices,buttered side up.
Cook sandwiches,on a hot griddle or in a non-stick skillent over medium heat,gently pressing with a spatula,4 minutes on each side or until golden brown and cheese is melted