01 -  Combine ricotta cheese, heavy cream, powdered sugar, and vanilla extract in a mixing bowl. Whip with an electric mixer or whisk until smooth and creamy. Refrigerate until ready for assembly. 
 02 -  Heat granulated sugar in a small saucepan over medium heat, stirring constantly until melted and golden brown. Add unsalted butter and stir until dissolved. Remove from heat, slowly whisk in heavy cream and a pinch of sea salt. Allow caramel to cool to room temperature. 
 03 -  Dice the mangoes into small cubes. Reserve several pieces for garnish if desired. 
 04 -  In four serving glasses, create a base layer with a spoonful of ricotta mixture, followed by diced mango, then a drizzle of caramel sauce. Repeat layers one more time, finishing with caramel sauce on top. 
 05 -  Top with chopped pistachios and fresh mint leaves if preferred. Serve immediately, or chill parfaits for up to 2 hours before serving.