Making Blueberry Tiramisu can be straightforward if you follow these easy-to-understand steps:

1. Prepare the Coffee: Brew your coffee and allow it to cool completely. If using, mix in coffee liqueur once cooled.

2. Whip the Cream: In a large bowl, whip the heavy cream until stiff peaks form. Gently fold in the mascarpone cheese, powdered sugar, and vanilla extract until well combined.

3. Combine Blueberries: Reserve a handful of blueberries for garnish. Gently fold the remaining blueberries into the mascarpone mixture.

4. Dip Ladyfingers: Quickly dip each ladyfinger into the cooled coffee mixture, taking care not to soak them.

5. Layer the Dessert: In a 9×9 inch dish, layer half of the dipped ladyfingers at the bottom. Spread half of the blueberry mascarpone mixture over the ladyfingers.

6. Repeat Layers: Add another layer of dipped ladyfingers on top, followed by the remaining blueberry mascarpone mixture.

7. Chill: Cover the dish with plastic wrap and refrigerate for at least 4-6 hours, or overnight for even richer flavor.

8. Dust and Serve: Before serving, dust the top with cocoa powder and garnish with reserved fresh blueberries.

These steps will ensure that your Blueberry Tiramisu is not only delicious but also visually stunning and a delight for all to enjoy!