Heat large, deep, non-stick frying pan (with lid) or large, shallow flameproof casserole dish over a medium-high heat. Add onion and paste. Cook, stirring for 1 minute, or until paste is fragrant.
Stir in sweet potato and 1 cup water. Bring to the boil. Reduce heat. Cover with lid. Simmer, covered for 12-15 minutes, until sweet potato is just tender.
Stir in chickpeas, beans and evaporated milk. Simmer, covered a further 5 minutes, or until beans are just tender.
Meanwhile, prepare rice in microwave as directed on packaging.
Sprinkle curry with peanuts. Serve with rice and lime wedges.