Crush/ powder the biscuits.

Whip the cream to soft peak. Add condensed milk and vanilla essence and whip till stiff peak are formed. Note: do not over whip or else you'll end up with butter. I recommend using a electric blender.

In a serving glass, first put a layer of powdered biscuit.

Next add a layer of whipped cream. Repeat the process to make further layers.

Chill in refrigerator for 2-3 hours. And serve.