Key Lime Whoopie Pies | Cooking Professionally

Ingredients

• ***For the cookies:***
• 2 cups all-purpose flour
• 1/2 cup graham cracker crumbs
• 1 1/2 teaspoons baking soda
• 1/2 teaspoon baking powder
• 1/2 teaspoon kosher salt
• 1 cup granulated sugar
• 1 stick unsalted butter, room temperature
• 1 large egg
• 1 teaspoon vanilla extract
• 1 cup whole milk
• ***For the filling:***
• 2 cups confectioners' sugar
• 2/3 cup unsalted butter, room temperature
• 4 ounces cream cheese, room temperature
• 1 cup marshmallow creme
• 1 tablespoon milk
• 6 Key limes, zested and juiced