Making Tiramisu Sandwich Cookies involves several simple steps. Follow these instructions to create your delicious treats:

1. Preheat the Oven: Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.
2. Mix Dry Ingredients: In a bowl, whisk together the flour, cocoa powder, baking soda, and salt. Set aside.
3. Cream Butter and Sugar: In a large mixing bowl, cream the softened butter and granulated sugar until light and fluffy.
4. Add Egg and Flavorings: Beat in the egg, vanilla extract, and brewed coffee until well combined.
5. Combine Mixtures: Gradually add the dry ingredients to the wet ingredients, mixing until just combined.
6. Scoop Dough: Using a cookie scoop or tablespoon, drop rounded balls of dough onto the prepared baking sheet, spacing them about 2 inches apart.
7. Bake: Bake in the preheated oven for 12-15 minutes or until the edges are firm but the centers are still soft. Remove from the oven and let cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.
8. Prepare Filling: In a separate bowl, whisk together the mascarpone cheese, powdered sugar, and vanilla extract until smooth and creamy.
9. Assemble Cookies: Once the cookies have cooled, spread a generous layer of the mascarpone filling on the bottom of one cookie, then top with another cookie to create a sandwich.
10. Dust with Cocoa Powder: For an elegant touch, dust the assembled cookies with cocoa powder before serving.

By following these steps, you’ll have a batch of delectable Tiramisu Sandwich Cookies that are sure to impress!