Or some green bell pepper. Combine zucchini in 10"x6" baking dish. Cover with lid or plastic wrap and microwave on high for 6 to ... Stir halfway through cooking.
Place butter in 12 x 8 inch (2 quart) microwave dish. Microwave 1 minute on high. Add zucchini and onion, microwave 3 minutes ... until cheese is melted.