Jam cookies

200 g unsalted butter
1 1/4 cup flour
1/3 cup potato flour
3/4 cup sugar

Filling:
Raspberry jam

Mix both flour types and add sugar. Cut in the butter and work it to a dough. Shape them into small balls, flatten them first with your hands and then with a fork. Take a round teaspoon and make a pocket in the middle to place the jam, but don't make holes (all the way down). Take some jam and place it in the pockets. Bake the cookies in the middle part of a preheated oven at 175 C (350 F) for about 10-15 minutes. Remove from oven and let the cookies cool on a wire rack. Yummy jam cookies are ready!