Sauté chopped onion in a Dutch oven coated with cooking spray over medium-high heat 5 minutes; add garlic, and sauté 1 minute. Add red curry paste; sauté 1 minute. Stir in kidney beans, diced tomatoes, coconut milk, and next 4 ingredients. Bring to a boil; reduce heat, and simmer 30 minutes. Serve over basmati rice, and sprinkle with toppings, if desired.
Note: Red curry paste may be found in the Asian section of large supermarkets or in Asian markets.