Oatmeal Whoopie Pies

Recipe View Preheat the oven to 350 degrees F (175 degrees C). Lightly grease 2 baking sheets. (5 minutes)

Recipe View Make the cookies: In a large bowl, cream together the brown sugar and softened butter with an electric mixer until light and fluffy. Beat in the eggs one at a time, mixing well after each addition. (7 minutes)

Recipe View In a separate bowl, whisk together the flour, cinnamon, baking powder, baking soda, and salt. Gradually add the dry ingredients to the wet ingredients in 2 batches, alternating with the boiling water. Mix after each addition until just combined. Stir in the quick cooking oats until evenly distributed. (10 minutes)

Recipe View Drop spoonfuls of dough about 2 inches apart onto the prepared baking sheets. For uniform pies, use a cookie scoop. (5 minutes)

Recipe View Bake in the preheated oven for 10 to 12 minutes, or until the edges are lightly golden. Switch racks halfway through for even baking. Remove from the oven and transfer to wire racks to cool completely. (12 minutes)

Recipe View While the cookies are cooling, prepare the filling: In a medium bowl, combine 1 cup of the confectioners' sugar, the beaten egg white, milk, and vanilla extract. Beat until smooth. Gradually beat in the shortening and the remaining 1 cup of confectioners' sugar until the filling is light, fluffy, and creamy. (10 minutes)

Recipe View Once the cookies are completely cool, spread a generous amount of filling onto the flat side of half of the cookies. Top with the remaining cookies to create delightful little sandwiches. (10 minutes)