In a mixing bowl, whip the chilled all-purpose cream and condensed milk together until smooth and fluffy.

Slice the ripe mangoes into thin, even pieces.

Spread a layer of the whipped cream mixture on the bottom of a square pan.

Arrange a layer of graham crackers over the cream.

Spread another layer of whipped cream on top of the graham crackers.

Add a layer of sliced mangoes on top of the cream.

Repeat the process of layering graham crackers, cream, and mangoes until the container is filled.

Cover and chill the Mango Graham in the refrigerator overnight.

Slice and serve cold the next day.