01 - 
                Cream butter, both sugars, and cinnamon until fluffy. Stir in vanilla. In another bowl, mix dry ingredients and add to the butter mixture slowly.
              
              
              
                02 - 
                Divide dough into 2 discs, cover tightly with plastic wrap, and chill for 30 minutes or longer.
              
              
              
                03 - 
                Roll dough to 1/8-inch thick. Use a 2.5-inch cutter to make circles. Use a small heart cutter for half. Move rounds to baking sheets with parchment.
              
              
              
                04 - 
                Bake in a 350°F oven for 9-10 minutes until edges just turn golden. Cool fully before assembling.
              
              
              
                05 - 
                Sprinkle powdered sugar on the heart cookies. Spread jam on the full circles, then sandwich a heart-topped cookie over each.