Chocolate Sandwich Cookies With Vanilla Cream Filling Recipe

• 1 1/4 c. all-purpose flour
• 1/2 c. Dutch processed cocoa
• 1 tsp baking soda
• 1/4 tsp baking pwdr
• 1/2 tsp salt
• 5 ounce unsalted butter - (1 1/4 sticks) at room temperature
• 1 1/2 c. granulated sugar
• 1 lrg egg
• 1 tsp vanilla extract
• 2 ounce unsalted butter - (1/2 stick) at room temperature
• 1/4 c. vegetable shortening
• 2 tsp vanilla extract
• 2 c. confectioner's sugar

Directions