Cook the glutinous rice

• Rinse the glutinous rice thoroughly until the water runs clear.
• Place the rice and the water in a rice cooker and cook until tender.

Sweeten the coconut milk

• While the rice cooks, heat the coconut milk and sugar in a saucepan over medium heat.
• Stir until the sugar has fully dissolved.

Soak the rice in coconut milk

• Pour part of the sweetened coconut milk over the warm cooked rice and stir to combine.
• Cover and let it sit so the rice absorbs the coconut milk.

Thicken the coconut sauce

• Mix the cornstarch with the water in a small bowl to make a slurry.
• Return the remaining coconut milk to the stove over medium heat, add the slurry and stir continuously until the sauce thickens.

Assemble and serve

• Serve the sticky rice with the sliced mango.
• Drizzle the thickened coconut sauce over the top.