01 -
In a large mixing bowl, use an electric mixer to whip the cold heavy cream until soft peaks form.
02 -
Gradually add the sweetened condensed milk to the whipped cream and continue whipping until stiff peaks form and the mixture is smooth and airy.
03 -
Arrange a single layer of graham crackers at the bottom of a 23x33 cm baking dish, breaking crackers as necessary to fit evenly.
04 -
Evenly spread one third of the whipped cream mixture over the graham cracker base.
05 -
Arrange a layer of sliced mangoes over the cream, ensuring an even coverage.
06 -
Repeat layering graham crackers, cream, and mangoes two more times, finishing with a mango layer on top.
07 -
Cover the dish with plastic wrap and refrigerate for at least 6 hours, preferably overnight, to allow layers to set and flavors to meld.
08 -
Slice into desired portions and serve well-chilled.