The set temperature is too low.
Increase the temperature by 25-50°F (10–20°C).
The food has a crust that is too thin and too soft.
Increase the temperature by 25-50°F (10–20°C).
Extend the cooking duration.
Switch on the Crisp Function, if available. When preparing moist food (such as frozen fries), follow the packaging instructions and turn the food over more often to reduce moisture in the oven compartment. Open the appliance door two to three times during cooking if there is a lot of food or if the food is very moist.
Do not add a burst of steam at the end of the cooking process so that a thicker crust can form.