Add dry ingredients to wet ingredients and mix to combine.
Mix until the dough comes together. Form it into 2 balls.
Wrap in plastic wrap and chill in fridge for 30 minutes to prevent sticking when rolling.
Preheat oven to 325 degrees F and line a baking sheet with parchment paper.
Roll the first ball of dough between 2 pieces of parchment paper about 1/4 inch thick. Chill in freezer for 5 minutes.
Remove from the freezer, use linzer cookie cutters (see notes above for cookie cutters) to cut half with a cut out in the center and half with full centers (read tips for making the dough).
Place onto the parchment lined baking sheet.
Re-roll any dough scraps that remain. Put the rolled dough into the freezer for 5 minutes before making the cut outs.
Repeat with the second ball of dough to make cookie cut outs with all of the dough, half with a cut out in the center and half with full centers.
Once your baking sheet is full, place the baking sheet into the freezer for 5 minutes before baking.
Bake for 20 minutes until lightly brown around the edges.
Let cool. Once the baked cookies are cool, separate the full cookies from the ones with the cut outs.
Dust the only the cookies with cut outs with powdered sugar using a fine mesh strainer.
Spread 1-2 teaspoons of jam on the full cookies and place the cookies with the cut out on top to form a cute little Linzer cookie sandwich. Repeat with remaining cookies.
Serve!
Store loosely covered with foil on a plate or in the refrigerator if storing for more than 2 days. They will get soggy if you store them in an air tight container