Chocolate Mint Sandwich Cookies Recipe

<ul class="ingredients-main-list"><li class="ingredients-single-item">200g all-purpose flour</li><li class="ingredients-single-item">75g cocoa powder, Dutch-processed</li><li class="ingredients-single-item">1/2 tsp baking soda</li><li class="ingredients-single-item">1/4 tsp salt</li><li class="ingredients-single-item">170g unsalted butter, softened</li><li class="ingredients-single-item">200g granulated sugar</li><li class="ingredients-single-item">1 large egg, room temperature</li><li class="ingredients-single-item">1 tsp vanilla extract</li><li class="ingredients-single-item">For the mint filling:</li><li class="ingredients-single-item">115g unsalted butter, softened</li><li class="ingredients-single-item">300g powdered sugar, sifted</li><li class="ingredients-single-item">1-2 tbsp heavy cream</li><li class="ingredients-single-item">1 tsp peppermint extract (or 1/4 tsp mint oil)</li><li class="ingredients-single-item">1/4 tsp vanilla extract</li><li class="ingredients-single-item">Pinch of salt</li><li class="ingredients-single-item">Optional: green food coloring (2-3 drops)</li></ul>

<ul class="equipment-main-list"><li class="equipment-single-item">Stand mixer or electric hand mixer</li><li class="equipment-single-item">Baking sheets</li><li class="equipment-single-item">Parchment paper</li><li class="equipment-single-item">5cm (2-inch) round cookie cutter</li><li class="equipment-single-item">Piping bag with medium round tip</li></ul>

<ol class="no-list-style"><li class="MethodStepper"><h4 class="step-title">Step 1</h4>In a medium bowl, whisk together the flour, cocoa powder, baking soda, and salt. This pre-mixing ensures even distribution of leavening agents and prevents overworking the dough later.</li><li class="MethodStepper"><h4 class="step-title">Step 2</h4>In the bowl of a stand mixer fitted with the paddle attachment (or using a hand mixer), cream the butter and sugar on medium-high speed for 3-4 minutes until light and fluffy. This extended creaming incorporates air, creating a better texture in your finished cookies.</li><li class="MethodStepper"><h4 class="step-title">Step 3</h4>Add the egg and vanilla extract to the butter mixture, beating until fully incorporated, scraping down the sides of the bowl as needed. The mixture should look smooth and slightly glossy.</li><li class="MethodStepper"><h4 class="step-title">Step 4</h4>With the mixer on low speed, gradually add the dry ingredients and mix just until combined. Be careful not to overmix as this can develop too much gluten, resulting in tough cookies.</li><li class="MethodStepper"><h4 class="step-title">Step 5</h4>Divide the dough into two equal portions and flatten each into a disc. Wrap in plastic wrap and refrigerate for at least 2 hours, or preferably overnight. Chilling the dough solidifies the butter, preventing excessive spreading during baking and intensifying the chocolate flavor.</li><li class="MethodStepper"><h4 class="step-title">Step 6</h4>When ready to bake, preheat your oven to 180°C (350°F) and line baking sheets with parchment paper. Remove one disc of dough from the refrigerator and let it sit for 5-10 minutes to slightly soften.</li><li class="MethodStepper"><h4 class="step-title">Step 7</h4>On a lightly floured surface, roll the dough to about 3mm (1/8 inch) thickness. Use a 5cm (2-inch) round cookie cutter to cut out shapes, re-rolling scraps as needed. Transfer cookies to the prepared baking sheets, spacing them about 2.5cm (1 inch) apart.</li><li class="MethodStepper"><h4 class="step-title">Step 8</h4>Bake for 10-12 minutes until the edges are set but the centers are still slightly soft. They'll continue cooking on the hot baking sheet. Let the cookies cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.</li><li class="MethodStepper"><h4 class="step-title">Step 9</h4>For the mint filling: In a clean stand mixer bowl with the paddle attachment, beat the softened butter until creamy, about 2 minutes. Add the sifted powdered sugar in three additions, mixing on low speed initially to prevent a sugar cloud, then increasing to medium speed until fully incorporated.</li><li class="MethodStepper"><h4 class="step-title">Step 10</h4>Add the peppermint extract, vanilla extract, salt, and 1 tablespoon of heavy cream. Beat on medium-high speed for 3-4 minutes until light and fluffy. If the filling is too thick, add the remaining tablespoon of cream. If using food coloring, add a few drops and mix until evenly distributed and you achieve a pale mint green color.</li><li class="MethodStepper"><h4 class="step-title">Step 11</h4>Transfer the filling to a piping bag fitted with a medium round tip. Flip half of your cooled cookies upside down and pipe about 1 tablespoon of filling onto each. Place another cookie on top, right side up, and gently press to spread the filling to the edges.</li><li class="MethodStepper"><h4 class="step-title">Step 12</h4>Allow the sandwich cookies to set for about 30 minutes before serving. This gives the filling time to firm up slightly and the flavors to meld. Store in an airtight container at room temperature for up to 5 days, or refrigerate for up to 1 week (but bring to room temperature before serving for the best texture and flavor).</li></ol>