1. Prepare sweet potatoes
2. Wash the soil
3. Wrap them with tin foil one by one, and put a piece of tin foil on the baking pan to make it easy to clean the baking pan
4. Put it in the oven, fire up and down 180 degrees, bake for 40 minutes
5. Take it out, turn it over and bake for another 20 minutes
6. Take it out again, remove the tin foil, and bake another 20 portions
7. carry out
Tips:Different ovens have different temperature settings
