Cut the zucchini wedges. For smaller zucchini, cut it into fourths, for larger zucchini, cut in half and then into thirds.
Spray a 9 by 13 inch pan with cooking spray and place zucchini skin side down. Cover with wax paper and microwave for 6 minutes.
While the zucchini is cooking, mix the bread crumbs, parmesan cheese, and garlic salt in a small bowl.
When the zucchini comes out of the oven, place a fork in the tablespoon of butter and use that to rub it over the steaming hot zucchini.
Carefully dip the fleshy part of the zucchini into the cheese bread crumb mixture. Then place it back skin side down in the 9 by 13 inch pan.
Once all the zucchini is covered (you will have extra bread crumb and cheese mixture), place it under the broiler for 1 to 4 minutes. Watch it carefully so it does not burn and remove once it has browned.
Serve hot and enjoy!