Preheat your oven to 325°F (163°C). In a medium bowl, combine the graham cracker crumbs, shredded coconut, and melted butter. Stir until the mixture holds together when pressed. Press this crust mixture evenly into the bottom of your greased 8x8-inch baking pan. Bake for 8-10 minutes until lightly golden and fragrant. Remove from the oven and let it cool while you prepare the filling.
In a large mixing bowl, beat the softened cream cheese with an electric mixer until smooth and creamy, about 2-3 minutes. Gradually add the granulated sugar and continue beating until combined. Add eggs one at a time, beating well after each addition. Stir in the vanilla extract.
Blend in the mango puree, sour cream, and sweetened condensed milk. Mix until the filling is smooth and fully incorporated. The mango puree not only gives vibrant color but infuses the bars with tropical sweetness, making these bars uniquely refreshing.
Pour the cheesecake filling over the cooled crust, spreading it evenly with a spatula. Bake at 325°F (163°C) for 40-45 minutes or until the edges are set and the center is slightly jiggly but not liquid. Avoid overbaking to keep the cheesecake moist and creamy.
Remove the bars from the oven and allow them to cool completely at room temperature. Then refrigerate for at least 4 hours or overnight for the best texture. Once chilled, cut into squares and serve chilled for a perfect bite every time.