Crush biscuits into very fine crumbs.Mix with melted butter until it feels like wet sand.Press firmly into a tray to form an even base.Chill in the fridge for 20 minutes.
Add all ingredients for filling in a blender and blend for 2-3 minutes until thick or just whip it up with an electric whisk
Pour the filling over the chilled biscuit base. Spread evenly. Let it set for an hour.
Add mango pieces on top of the cream layer.
prepare jelly according to package instructions. Let the jelly cool until it’s no longer hot (but still pourable). Gently pour over the top.
Refrigerate for at least 4 hours (overnight is best).