Preheat oven to 340 degrees F.
Add the butter and sugar to a stand mixer or mixing bowl. Cream until light and fluffy.
Add the flour and mix until the dough resembles course meal.
Add egg yolk and mix until the dough comes together.
Place dough in cling film and chill in refrigerator for 30 minutes.
Turn the dough out onto a floured surface and roll out to 1/3 inch thick.
Using a 21/2 inch fluted cookie cutter cut out the cookies. Using a smaller cutter, cut out the centers of half of the cookies.
Place them on a parchment covered baking sheet.
Bake 12-13 minutes until they start to turn golden brown on the bottom.
Allow to cool completely.
Once cooled, take a cookie without a cut-out and spread a scant teaspoon of jam.
Top with a cut-out cookie.
Sprinkle with confectioner's sugar