Thumbprint Cookies

Process all ingredients into a smooth dough, then chill it in the refrigerator for at least two hours (or even overnight).

Roll the dough into a thin log and cut it into even slices, from which you can shape balls about 2 cm in diameter. Place the balls at slight intervals on a baking sheet lined with parchment paper. Make a deep indentation in each ball with the narrow end of a small wooden spoon. Chill in the refrigerator for an hour.

If the jam is not completely smooth and contains seeds, strain it through a sieve.