Slice the bananas thinly.
In a bowl, add heavy cream and sugar and whip until stiff peaks form.
Add vanilla extract and mix well.
Layer vanilla wafers at the bottom of a dish.
Place banana slices on top of the wafers.
Spread whipped cream over the bananas.
Repeat the layers to build up the dessert.
Decorate the top with extra wafers and banana slices.
Chill in the refrigerator before serving.