1. Thawing: Take out the frozen chestnuts and thaw them at room temperature. It is best not to thaw in the microwave oven, or the taste of chestnuts will go bad.

2. Incision: cut a mouth on each chestnut to prevent the chestnut from exploding.

3. Baking tray: put chestnuts evenly on the baking tray, and be careful not to overlap, otherwise it will affect the baking effect.

4. Oven temperature: Generally speaking, the oven temperature is controlled at about 180℃ and the baking time is about 20 minutes. The specific time and temperature can be adjusted according to the size of chestnut and personal taste.

5. Avoid over-baking: When baking chestnuts, be careful not to over-bake, so as to avoid the chestnuts being too dry and black.