Electric roaster ovens heat up quicker and use less energy than most conventional ovens. Roasters have a dome lid that holds in heat and moisture to prevent foods from drying out as they cook. Countertop electric slow roasters are often used for large meals to heat the main course while the side dishes are cooked in a built-in oven. You can use an electric roaster to prepare and keep food warm until the last serving.
Wash the electric roaster lid and drip pan inserts with liquid dish soap and a nonabrasive sponge. Wipe down the exterior of the base unit with a slightly damp sponge. Reassemble any parts that were removed for cleaning.
Place the electric roaster on a flat stable surface. Attach the plug to the back of the roaster. Insert the other end of the plug into an electrical outlet.
Add ½ cup of cooking liquid such as water, beer, wine or stock to the inside of the electric roaster. Set the heat to 325 degrees Fahrenheit. Cover the roaster with the lid and heat for 15 minutes.
Set the fully-thawed meat or vegetables into the roaster. Cover the electric roaster with the lid. Cook for one hour.
Pour the other ½ cup of cooking liquid into the base of the roasting pan. Insert a probe into the thickest part of the food without contacting bone. Remove foods from the roaster when the temperature is above 140 degrees Fahrenheit and 5 degrees below the final desired temperature (see Resources).