1. Wash the sweet potatoes and wipe dry
2. Prepare a piece of tin foil
3. Line the baking tray with tin foil and place the sweet potatoes on the baking tray
4. Put it in the preheated oven, heat up and down at 220 degrees, and bake the middle layer for 60 minutes
Tips:1. The size of sweet potatoes depends on the baking time, it is best to choose the same size sweet potatoes
2. Adjust the temperature and time according to your own oven
