Why Your Toaster Oven Burns Food
Toaster ovens are the workhorse of small kitchens, but recipes written for full-size ovens often come out burnt on top and underdone inside. The small cavity puts food close to the heating elements, and many models run hotter than their dial. A few adjustments fix most problems.
Food is too close to the elements
In a compact oven, the top of a casserole or a tall muffin can sit just a few centimetres from the upper element, which browns and burns it long before the centre cooks. Tall food in a small cavity is the most common cause of burnt tops.
Use the lowest rack position for baking and roasting, and keep the top of the food at least a couple of inches below the upper element. Choose shallower pans and cut large items into smaller pieces so they cook through quickly.
The oven runs hotter than the dial
Small ovens often have less accurate thermostats and temperature swings. A toaster oven set to 350°F can easily run 25-50°F hotter, especially in the first minutes after preheating.
Place an oven thermometer in the middle of the rack and check the real temperature after preheating. If it runs hot, set the dial lower. Many cooks also reduce temperature by about 25°F for recipes written for full-size ovens.
Convection fans speed things up
Convection and air fry settings circulate hot air, which browns food faster and shortens cooking time. Using convection with a standard recipe time often leads to overcooked or dried-out food.
Reduce temperature by roughly 25°F or shorten the cooking time when using convection, and start checking food several minutes before the recipe suggests.
Dark pans and foil reflect heat
Dark metal pans absorb more heat and brown bottoms faster. Glass and ceramic dishes hold heat and keep cooking after removal. Match the pan to the food and check bottoms often at first.
Shiny foil touching the elements can reflect heat or cause hot spots, and some manufacturers advise against lining crumb trays with foil. Loosely tent foil over the top of food only if it is browning too quickly, keeping it clear of the elements.
Clean crumbs to stop smoke and scorching
Crumbs and grease on the crumb tray burn and smoke, giving food a burnt smell and taste. Empty and wash the tray regularly, and wipe the interior once it has cooled.
Allow space around the oven for ventilation and keep it away from cabinets. Burnt-on residue on the elements can be gently wiped after cooling, following the manual, since harsh scrubbing can damage coatings.