Melt white chocolate chips, then gently pour and spread it around three silicone cupcake liners.
Chill cups until white chocolate hardens, about 10 minutes.
Meanwhile, open can of chilled coconut milk, and carefully scrape out the hardened part that will be at the top of the can.
Add this solid coconut milk to a blender along with chopped mango and melted coconut oil, pulsing until well incorporated. If this isn’t sweet enough, then add a teaspoon or two of sugar to sweeten to your preference.
Pour into chilled white chocolate cups and chill for at least four hours or overnight.