1-In a large mixing bowl beat heavy: In a large mixing bowl beat heavy cream until soft peaks form
2-Add in the mascarpone cheese, powdered sugar: Add in the mascarpone cheese, powdered sugar and vanilla extract and beat on medium speed until stiff, set aside
3-Line the ladyfingers in a single layer,: Line the ladyfingers in a single layer, in the bottom of 9×13 or similarly sized baking dish
4-Brush half of the ladyfingers with half: Brush half of the ladyfingers with half of the orange juice
5-Spread half of the mascarpone mixture over: Spread half of the mascarpone mixture over the ladyfingers and layer with the sliced bananas
6-Repeat the steps again: Repeat the steps again
7-Cover with cool whip and refrigerate for: Cover with cool whip and refrigerate for at least 4 hours or overnight
8-Garnish with sliced bananas if desired: Garnish with sliced bananas if desired
9-Serve: Serve