Apple Whoopie Pies

Ingredients

• 1 cup packed brown sugar
• 0.75 cups unsweetened applesauce
• 0.5 cups vegetable oil
• 1 large egg
• 0.5 teaspoons vanilla extract
• 1.75 cups flour
• 0.5 teaspoons salt
• 0.5 teaspoons baking powder
• 0.5 teaspoons baking soda
• 0.5 teaspoons apple pie spice
• 0.5 cups apple
• marshmallow-apple spice buttercream

Instructions

1. 1

   Arrange racks in upper and lower thirds of oven; preheat to 375 degrees F (190 degrees C). Line 2 (10x15-inch) rimmed baking sheets with parchment paper.

2. 2

   Stir together brown sugar, applesauce, oil, egg, and vanilla in a large bowl. Mix with an electric mixer at low speed until combined. Add flour, salt, baking powder, baking soda, and apple pie spice. Beat until just combined. Fold in apple.

3. 3

   Working in batches as needed, drop dough on prepared baking sheets using a 1 1/2-tablespoons scoop, spacing 2 inches apart.

4. 4

   Bake in the preheated oven until cookies are set and lightly browned on edges, 10 to 12 minutes. Transfer to wire racks to cool completely, about 30 minutes.

5. 5

   Spoon marshmallow-apple spice buttercream into a zip-top plastic bag. Snip off a corner of bag. Turn half of cookies upside down; pipe about 1 1/2 tablespoons buttercream onto each. Top with remaining cookies to form sandwiches. (To store, chill unfilled cookies in a single layer in an airtight container up to 3 days or freeze up to 3 months. Fill cookie sandwiches just before serving.)