Homemade Oreo Cookies

INGREDIENTS

1 1/4 cups

all-purpose flour

1/2 cup

unsweetened cocoa powder

1 tsp

baking soda

1/8 tsp

salt

1/2 cup

butter (, room temperature )

3/4 cup

granulated sugar

1/4 cup

light brown sugar (, packed )

large egg

1 tsp

vanilla extract

1/4 cup

butter

1/4 cup

vegetable shortening (, or 4 oz of cream cheese if you'd like a cream cheese frosting for the filling, instead.)

1 3/4 cups

powdered sugar

1 tsp

vanilla extract