Easy Valentine Sandwich Cookies

Step 1
Preheat the oven to 350 degrees F (175 degrees C).

Step 2
Cream butter and confectioners' sugar together in a large bowl. Beat in egg, vanilla, and almond extract.

Step 3
Whisk flour, baking soda, and cream of tartar together in a medium bowl. Add to butter mixture; beat until dough is just combined. Divide dough into thirds and shape each portion into a ball.

Step 4
Place one portion of dough on a lightly floured surface and roll out to 1/4-inch thickness. For each sandwich cookie, cut out two 3-inch hearts; cut out the center of one of the hearts with a 1 1/2-inch cutter. Place cutout pieces 1 to 2 inches apart on an ungreased cookie sheet. Repeat with remaining dough.

Step 5
Bake in the preheated oven until lightly browned, 7 to 8 minutes. Cool completely on wire racks.

Step 6
Frost each solid 3-inch cookie with Pink Valentine Frosting and top with an open-centered cookie to form a sandwich. Frost the remaining small hearts and serve as separate cookies.