Directions
<ol class="no-list-style"><li class="MethodStepper"><h4 class="step-title">Step 1</h4>Preheat your oven to 170°C (fan)/190°C (conventional). Line two large baking sheets with parchment paper or silicone baking mats. This preparation ensures your cookies bake evenly and don't stick.</li><li class="MethodStepper"><h4 class="step-title">Step 2</h4>In a medium bowl, whisk together the flour, cocoa powder, baking soda, and salt until well combined. Sifting the cocoa powder will help avoid any lumps in your batter, resulting in a smoother cookie texture.</li><li class="MethodStepper"><h4 class="step-title">Step 3</h4>In the bowl of your stand mixer fitted with the paddle attachment (or using a hand mixer), cream together the butter and sugar on medium-high speed for about 3-4 minutes until light and fluffy. This extended beating incorporates air into the mixture, creating a lighter cookie texture.</li><li class="MethodStepper"><h4 class="step-title">Step 4</h4>Add the egg and beat until fully incorporated, then mix in the vanilla extract. Scrape down the sides of the bowl to ensure everything is evenly mixed.</li><li class="MethodStepper"><h4 class="step-title">Step 5</h4>In a small bowl or measuring cup, combine the buttermilk, red food coloring, and vinegar. The vinegar reacts with the buttermilk and baking soda to enhance the red color and create a tender crumb.</li><li class="MethodStepper"><h4 class="step-title">Step 6</h4>With the mixer on low speed, gradually add the dry ingredients to the butter mixture in three additions, alternating with the buttermilk mixture (beginning and ending with the dry ingredients). Mix just until combined – overmixing will develop the gluten in the flour and make your cookies tough.</li><li class="MethodStepper"><h4 class="step-title">Step 7</h4>Using your cookie scoop, drop rounded tablespoons of batter onto the prepared baking sheets, spacing them about 5cm apart as they will spread during baking. Aim for uniform size to ensure even baking and perfectly matched sandwich halves.</li><li class="MethodStepper"><h4 class="step-title">Step 8</h4>Bake for 10-12 minutes, until the cookies spring back when lightly touched and a toothpick inserted comes out clean. Don't overbake or they'll lose their soft, cake-like texture – the tops should not brown substantially.</li><li class="MethodStepper"><h4 class="step-title">Step 9</h4>Allow the cookies to cool on the baking sheets for 5 minutes before transferring to a wire rack to cool completely. They're very soft when hot and will firm up as they cool.</li><li class="MethodStepper"><h4 class="step-title">Step 10</h4>While the cookies cool, prepare the cream cheese filling. In your cleaned mixer bowl, beat the cream cheese and butter until smooth and fluffy, about 2-3 minutes. The ingredients must be at room temperature to achieve a smooth, lump-free filling.</li><li class="MethodStepper"><h4 class="step-title">Step 11</h4>Add the vanilla extract and pinch of salt, then gradually add the sifted powdered sugar, mixing on low speed until incorporated. Increase to medium speed and beat until light and fluffy, about 2 more minutes.</li><li class="MethodStepper"><h4 class="step-title">Step 12</h4>Once the cookies are completely cool, match them into pairs of similar size. Turn half of the cookies upside down. Either pipe or spread about 2 tablespoons of filling onto each upside-down cookie, then gently press the matching cookie on top to create a sandwich.</li><li class="MethodStepper"><h4 class="step-title">Step 13</h4>For the best flavor and texture, refrigerate the assembled whoopie pies for at least 30 minutes to allow the filling to set. This makes them easier to handle and enhances the flavor contrast between the cake and filling. Bring to room temperature for about 15 minutes before serving for the best eating experience.</li></ol>