Ingredients
Yield: 25-30 sandwich cookies
Cookies:
1 stick unsalted butter, softened to room temperature
1 cup white sugar
1 large egg
1 teaspoon vanilla extract
1 and 1/2 cups all-purpose flour
4 tablespoons cocoa powder, unsweetened
1/4 teaspoon salt
1 teaspoon baking soda
2 teaspoons cornstarch
Cream Filling:
1/2 stick unsalted butter, softened
1/4 cup shortening
2 cups powdered sugar
2 teaspoons vanilla extract
Preparation
