Step 1

Preheat oven to 350° F. Set aside baking sheets lined with parchment.

Step 2

Sift together flourcocoasalt and baking soda in a small bowl.

Step 3

Mix together buttergranulated sugar and brown sugar until thoroughly combined. Add egg white and vanilla extract until combined. Add flour mixture in 2 installments and mix until combined.

Step 4

Roll dough to ¼-inch thicknessand cut cookies using desired heart shaped cookie cutters. Be sure to have matching pairs of cookies for each sandwich cookie.Bake cookies 8-10 minutes (depending on size)until edges are firm. Remove baking sheets from oven and place on cooling rack. Let cookies cool to room temperature.

Step 5

Microwave morsels in a small microwave-safe bowl on HIGH (100%) power for 45 seconds to 1 minute; stir. Microwave at additional 10- to 20-second intervalsstirring until smooth. Let the chocolate come to room temperature as you wait for the cookies to come to room temperature as well.

Step 6

Place a dollop of melted morsels into the center of one of the cookies. Place the matching pair cookie on top and create the sandwich.Repeat with remaining cookies and let chocolate set before eating. If desireddip completed sandwich cookies into remaining melted chocolate and decorate with Valentine’s themed sprinkles.