Aluminum foil can go in the toaster oven, although if you have any visible heating elements, especially with thew newer IR kind, you should keep the aluminum foil away from the heating elements.
You can use aluminum foil in toaster ovens, but you have to use caution when doing so.
When using aluminum foil in your toaster oven you should always keep the aluminum foil from touching the heating elements and never place the aluminum foil on the crumb tray or floor.
And avoid covering the entire rack or large or a large portion of the toaster oven with aluminum foil.
You can also line a pan with aluminum foil to catch drips or cover food to prevent burning.
Aluminum foil can be used in toaster ovens to line pans and cover the baking tray or pan to make cleanup easier.
You can also use the aluminum foil to cover food to prevent the food from burning in the toaster oven, especially when cooking foods for longer periods of time or longer toasting sessions.
Always keep the aluminum foil to a manageable size, and just large enough to catch any drips, but not so large that the aluminum foil blocks the airflow or hits the heating elements.
And the most critical thing when using aluminum foil in a toaster oven, is to keep the aluminum foil away from heating elements as it can damage the toaster oven and even potentially start a fire.
Blocking the toaster oven rack with tin foil by covering the entire rack can also result in uneven cooking and may even damage the heating elements.
And never place the aluminum foil on the bottom of the toaster oven, as doing so can block airflow and result in overheating of the toaster oven and heating elements.
And don't the toaster oven crumb tray with aluminum foil as it can cause overheating and a fire risk, especially if any grease accumulates.