In a large mixing bowl, pour in heavy cream, sugar, and vanilla extract. Beat with a hand mixer on medium speed until stiff peak forms.

Add mascarpone cheese, and mix until combined.

In a separate shallow bowl, add coffee flavored liqueur.

Dip the lady fingers in the liquid briefly and place them in a square pan (8x8'') in a single layer.

Add half of the heavy cream mixture on top. Smooth it out.

Then add another layer of lady fingers dipped with coffee liqueur.

Add the remaining heavy cream mixture on top. Smooth it out.

Dust cocoa powder over the top. Chill it in the refrigerator for 3 hours or overnight before serving.