- In another bowl combine add the flour baking powder, ginger, and baking soda. Whisk to blend together.
- Add to flour mixture to the wet mixture. Stir just until combined. Spread batter into an ungreased 13x9x2-inch baking pan.
- Bake about 25 minutes or until a toothpick inserted in center comes out clean. Cool completely in pan on a wire rack.
- Once the cake is cooled prepare the frosting. In a medium mixing bowl beat the fosting ingredients with an electric mixer on medium speed until fluffy. Spread or pipe the frosting over the cooled bars. Makes 36 bars.