Banana Whoopie Pies

Ingredients

• 2 cups all-purpose flour
• 1/2 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon salt
• 1/2 cup mashed banana
• 1/2 cup sour cream
• 4 ounces unsalted butter, softened
• 1/2 cup granulated sugar
• 1/2 cup packed brown sugar
• 1 large egg
• 1 teaspoon pure vanilla extract
• 16 ounces cream cheese, softened
• 1 cup confectioners' sugar, plus
• more confectioners' sugar, for dusting

Directions

1. 1

   Preheat oven to 350. Line 2 baking sheets with parchment. Sift flour, baking powder, baking soda and salt into a bowl. Combine banana and sour cream in another bowl.

2. 2

   Beat butter, granulated sugar and brown sugar with a mixer on medium-high speed, until pale and creamy. Add egg and 1/2 teapsoon vanilla, beating until incorporated. Add banana mixture in 2 additions, alternating with the flour mixture.

3. 3

   Transfer batter to a pastry bag fitted with a 1/4 inch plain tip (I just used a disposable pastry bag and clipped the end off) Pipe batter into 1 1/4 inch rounds on baking sheets, spacing about 1 1/2 inches apart.

4. 4

   Bake until edges are golded, about 12 minutes. Slide parchment, with cookies onto wire racks, Let cool.

5. 5

   Beat Cream cheese, confectioners' sugar and remaining 1/2 teaspoon vanilla with a mixer on medium speed until smooth.

6. 6

   Pipe or spoon 1 tablespoon cream cheese mixture onto the flat side of half the cookies. Sandwich with remaining cookies. Dust with confectioners' sugar and serve immediately.