For cleaning a toaster oven - "Place a small oven-safe container filled with water inside the oven and heat at 350 degrees Fahrenheit for 10 minutes to soften everything up, says Findley. Unplug the oven and remove the crumb tray and the rack; dump out the crumbs. Use a plastic spatula to scrape off stuck-on morsels. Wash the tray and the rack with dish soap and wipe dry with a cotton cloth. Wipe the inside and the burners with a damp cloth and a drop of dish soap, then let dry."