Beat butter and lemon zest with a heavy duty mixer until creamy, gradually add sugar beating well.
Combine gluten free flour and salt, gradually add it to the butter mixture beating until well blended.
Roll dough into 1/8th inch thickness on a lightly floured surface
Cut dough with a 2 1/4 or 3 1/4 inch heart cookie cutter, place 1/2 inch apart on a parchment paper lined cookie sheet.
Bake at 325 for 12 to 14 minutes or until edges are lightly browned, cool on the baking sheet for 5 minutes. Transfer to wire rack for 20 minutes, then decorate as desired.
Notes
Recipe For Glaze for Dipping 1 16 oz bag of powder sugar stir together with 6 Tbsp of water or milk. Add food coloring paste to the desire color.Recipe For Royal Icing3 cups powder sugar 2 Tbsp meringue powder1/4 cup cold water food coloring beat first three ingredients at high speed with a mixer util glossy stiff peaks form. Tint icing with desired amount of food color according to color.Place a damp cloth over icing when not using so it doesn't harden.Valentine Cookie Cut Out Tips,Soften butter works best, The dough will be crumbly until it's kneed together , I cut the dough in half it worked better.Lightly flour the surface to roll out dough. Not too much flour.