Gluten-Free Whoopie Pies

Ingredients

1/2 cup light brown sugar

1/4 cup granulated sugar

2 large eggs, room temperature

1 teaspoon pure vanilla extract

3/4 cup gluten-free all purpose flour blend

1/2 teaspoon baking powder

1/4 teaspoon baking soda

1/4 teaspoon salt

3 tablespoons cocoa powder

For the Filling:

6 tablespoons butter, softened

3 cups powdered sugar

3 tablespoons milk or cream