- Preheat oven to 350 degrees F. You also need heart-shaped cookie cutters in two sizes.
- Cream together the butter and sugar until combined. Add the egg yolk and mix well.
- Sift in both flours and mix with your hands until a dough forms.Refrigerate for at least one hour.
- Rollout the dough and cut out heart shapes with your cookie cutters. Cut out the centers with the smaller cookie cutter from half of the batch.
- Bake for 12 minutes at 350 degrees F.
- Once they are done, take them out of the oven and set them aside to cool.
- And now Spread jam on the other batch of cookies.