Use microwavable cookware.
Ovenproof Glass
Ovenproof glassware that is treated for high intensity heat so it is heat-resistant is microwave-safe.
Use utility dishes, loaf dishes, pie plates, cake plates, liquid measuring cups, casseroles and bowls without metal rims.
Do not use delicate glassware, such as tumblers or wine glasses, as these might shatter when heated.
China
Use bowls, cups, serving plates, pottery, stoneware, ceramic, and platters without metal rims or handles. Many containers made of these materials are microwave-safe, but test them before use.
Plastic
Plastic Storage Containers: Use plastic dishes, cups, semi-rigid freezer containers and plastic bags only for short cooking times. Do not use them when cooking food for long periods or at high power levels, as the hot food will eventually warp or melt the plastic.
Plastic wrap (as a cover): Lay the plastic wrap loosely over the dish and press it to the sides. Vent plastic wrap by turning back one edge slightly to allow excess steam to escape. The dish should be deep enough so that the plastic wrap will not touch the food. As the food heats it may melt the plastic wrap wherever the wrap touches the food.
Plastic Cooking Bags: Provided they are specially made for cooking, cooking bags are microwave safe. Remember to make a slit in the bag so that steam can escape. Never use ordinary plastic bags for cooking in the microwave oven, as they will melt and rupture.
Plastic Microwave Cookware: A variety of shapes and sizes of microwave cookware are available. You may be able to use items you already have on hand rather than investing in new kitchen equipment.
Paper
Use paper towels, waxed paper, paper napkins, and paper plates with no metal rims or design. Look for the manufacturer’s label for use in the microwave oven.
Paper plates and containers are convenient and safe to use in the microwave oven, provided that the cooking time is short and the foods to be cooked are low in fat and moisture. Paper towels are also very useful for wrapping foods and for lining baking trays in which greasy foods such as bacon are cooked.
Avoid colored paper products as the color may run. Do not use recycled paper products in the microwave oven. They may contain impurities which could cause arcing or fires when used in the microwave.
Tableware
Many containers made of pottery, stoneware and ceramic are also microwave-safe. If in doubt consult the manufacturer’s literature or perform the microwave test.
Do not put plates with painted decoration in the oven, as the paint may contain metal and cause arcing.