Mix together flour, baking soda, salt, ginger, cinnamon and allspice into a medium bowl. Set aside.

Cream butter and SPLENDA® Brown Sugar Blend in a large bowl until smooth. Beat in egg and egg yolk. Stir in dry ingredients and mix until dough forms. Shape dough into a disc, wrap, and refrigerate for 2 hours.

Preheat the oven to 350 degrees F. Line a cookie sheet with parchment paper.

Roll out dough to 1/4 inch thick on a lightly floured surface. Using a 4-inch cookie cutter, cut dough and place on cookie sheet.

Bake for 15 to 18 minutes. Allow cookies to cool for 2 minutes, then remove from pan and let cool completely on rack.