No-Bake Mango Cheesecake

Ingredients

• 3 Tablespoons sugar
• 3 / 4 cup melted butter
• 2 Tablespoons unsweetened cocoa powder
• 400 g pack or 2 ¾ cups graham cracker crumbs
• 1 / 2 cup sugar
• 2 envelopes Knox unflavored gelatin*
• ¼ cup cornstarch
• ¼ cup water
• 1 cup evaporated milk
• 3 egg yolks (slightly beaten)
• 1 tsp pure vanilla extract (optional)
• 1 cup cream cheese (250g or 8oz, at room temperature)
• 1 pint 473ml heavy whipping cream 33-35%mf
• 3 Tablespoons icing sugar (powdered sugar**)
• 3 ripe Ataulfo mangoes (divided)
• 1 Tablespoon sugar
• 1 teaspoon lemon juice
• Mint leaves for garnish (optional)