Creating Strawberry Tiramisu is a delightful process. Follow these step-by-step instructions to achieve the best results:

1. Prepare Strawberries: In a bowl, combine sliced strawberries with a tablespoon of powdered sugar. Let them macerate for about 15 minutes.
2. Whip Cream: In a separate mixing bowl, whip the heavy cream until soft peaks form.
3. Mix Mascarpone: In another bowl, combine the mascarpone cheese, remaining powdered sugar, and vanilla extract until smooth.
4. Fold Cream: Gently fold the whipped cream into the mascarpone mixture until well combined.
5. Prepare Coffee Mixture: In a shallow dish, mix the brewed coffee with coffee liqueur if using.
6. Dip Ladyfingers: Quickly dip each ladyfinger into the coffee mixture, making sure they are soaked but not soggy.
7. Layering: In a rectangular dish, start with a layer of dipped ladyfingers at the bottom.
8. Add Mascarpone Mixture: Spread half of the mascarpone mixture evenly over the ladyfingers.
9. Add Strawberries: Layer half of the macerated strawberries on top of the mascarpone layer.
10. Repeat Layers: Repeat the process with another layer of dipped ladyfingers, the remaining mascarpone mixture, and finally the remaining strawberries.
11. Chill: Cover the dish with plastic wrap and refrigerate for at least 4 hours or overnight for best flavor.
12. Dust with Cocoa: Before serving, dust the top with cocoa powder for a finishing touch.

These steps guarantee a delicious and visually appealing Strawberry Tiramisu that your guests will talk about long after the last bite!