Step 1

In a large bowl, blend the butter, sugar, egg, egg white and almond extract until well combined. Add the flour, almond flour, xanthan gum, baking powder, and salt, beating well after each addition. After adding the final ingredient, beat the mixture until it becomes thicker and a bit more elastic. Divide the dough into two equal parts, wrap each part in plastic wrap, and place the dough in the refrigerator to chilll for an hour until firm.

Step 2

Once the dough is properly chilled , preheat the oven to 350°F.

Step 3

For each portion of dough, place between two sheets of parchment paper. Roll out until a little less than 1/4" thick. Remove the top piece of paper. Cut into 2" round circles. Remove excess to roll out on another sheet of parchment. Then press a tiny heart or star cutter into the middle of half of the cookies. Transfer entire sheet of parchment with the cookies onto a half sheet pan. Do not try to pick up the cookies with your hands or they will lose their shape. Repeat process with remaining dough.

Step 4

Bake cookies in preheated oven for 9-11 minutes. They should look very light golden brown on the edges of the cookies. Do NOT overbake or they will be too crispy. Let cool.

Step 5

Place one teaspoon of jam in the middle of each (whole) cookie. Spread the jam over cookie. Place the remaining cookies on top after dusting them with powdered sugar. You should have 24 sandwich cookies.