Utensils: If you're using all ... more than 2 chicken breasts, you'll need an extra large glass rectangular casserole dish. Otherwise a cake size ... the zucchini and mushrooms. You'll also need 1 ... or a toaster oven.
Preheat oven to 350°F. Cook and stir mushrooms and onions in butter until ... Spoon into 3-quart casserole dish. Cover and bake at ... 10 to 15 minutes.