Convection ovens circulate hot air through the cooking chamber, decreasing the baking time required. Most recipes specify cooking times for conventional ovens; using a convection oven means you need to alter both the cooking time and temperature in conventional recipes to prevent burning or overcooking your food. As with any cooking guidelines, these suggestions might not work with all recipes, so use a meat thermometer to ensure your food is fully cooked.
Look for the cooking time and temperature for your recipe. Preheat the oven to 25 degrees lower than the normal oven baking temperature.
Place the food in a shallow baking dish or on a baking sheet, unless otherwise specified by the recipe. Using a baking sheet or pan with shorter walls allows the hot air from the convection oven to come into more contact with the food, allowing for more even cooking.
Place the food in the oven and decrease the cooking time by 25 percent. For instance, a casserole with a normal baking time of 40 minutes would only need 30 minutes baking time in a convection oven.
Begin to check the food 10 minutes before the food is scheduled to be done. Use a meat thermometer to test the doneness of meat.