Steps
1. Heat butter in a pan over medium heat until melted.
2. Add cumin seeds and let them sizzle for a few seconds.
3. Add the chopped onion, garlic, ginger, and green chili. Sauté until golden brown.
4. Stir in turmeric, coriander powder, and salt. Cook the spices for 1 minute.
5. Add the butter beans and mix well to coat with the spices.
6. Pour in the water, cover, and simmer on low heat for 15-20 minutes until beans are tender and the curry thickens.
7. Sprinkle garam masala and stir well. Cook for another 2 minutes.
8. Garnish with fresh coriander leaves and serve hot with steamed rice or gluten-free flatbread.