【Ingredients】：

3 potatoes

4 pieces of butter

Rosemary a little

【Step】:

1. Put chopsticks under the potatoes and cut them into thin slices. Don't cut them.

2. Put it in the oven at 180 degrees and bake it for 35 minutes. 

3. Add butter and sprinkle with black pepper. Then bake for another 5-10 minutes。You can also put some rosemary.