In a large mixing bowl, combine the all-purpose cream, sweetened condensed milk, and evaporated milk. Whip gently on low speed until smooth and creamy, about 2-3 minutes.

Carefully peel the ripe mangoes and slice them into thin pieces, about ¼ inch thick.

Select a serving dish and layer the graham crackers at the bottom, covering the base completely.

Spread a layer of the cream mixture over the graham crackers, followed by a layer of sliced mangoes, then repeat until all ingredients are used, ending with a cream layer on top.

Cover the dish and refrigerate for at least 4 hours, preferably overnight.

Before serving, optionally top with additional mango slices or crushed graham crackers. Cut into squares and serve chilled.