Heat butter in a pan over medium-high heat. Add red onion and chopped garlic, sauté 2-3 minutes. Add basmati rice, stir to coat.
Add coconut milk and water to the pan. Bring to boil, cover, reduce heat and simmer for 10-15 minutes until rice is tender.
Stir in coconut, golden raisins. Mix in (or sprinkle on top as shown) chopped fresh mint. Fluff and serve.