Football Whoopie Pies - The BakerMama

Ingredients

• 1/2 cup (1 stick) unsalted butter, softened
• 1/2 cup granulated sugar
• 1/2 cup brown sugar
• 1 large egg
• 1 teaspoon vanilla
• 1 and 3/4 cup all-purpose flour
• 3/4 cup unsweetened cocoa powder
• 1 and 1/2 teaspoons baking soda
• 1/2 teaspoon salt
• 1 cup whole milk
• 1/2 cup (1 stick) butter, softened
• 1 cup marshmallow fluff
• 3 cups powdered sugar
• 1-2 teaspoons milk, if needed