Cream together butter and sugar with an electric mixer until light and fluffy. Add the egg and beat until well blended. Add the yolk, vanilla and beat.
Add flour, salt and processed almonds. Beat at low speed until the dough comes together. Do not overbeat.
Turn onto a floured surface and shape into a ball. Divide the dough into two and press down each half to form two discs. Wrap them with plastic wrap and chill for at least an hour. It is important that the soft dough firms up in the fridge.
Preheat oven to at 160°C/320°F. Line a baking sheet with parchment paper. Take one of the discs of dough out of the fridge, roll it out on a floured surface and cut out the cookies with a circular cookie cutter. Place them on the prepared baking sheet and freeze them for 5 minutes. Bake them for 15 minutes or until the edges are slightly golden. Repeat the process with the second disc, but this time use a smaller cutter to cut out the center of each cookie. If you do not have a smaller cutter, just use a soda cap or a piping nozzle.
Spread a little jam in the center of each whole cookie. Sprinkle the cut-out cookies with powdered sugar, place 1 cut-out cookie atop each jam-topped cookie and serve.