Heat butter and saute the onion till soft.

Now add the tomato, paste, cinnamon, salt and pepper along with 1 litre of water. Keep on high flame till the water boils, then keep it on simmer for 30-45 minutes, stirring occasionally.

Now add the rice and stir well. Cook for a further 25-30 minutes on simmer till the rice gets cooked and mashed. Add some water if the soup gets too thick. Adjust on the salt and pepper.

Serve warm and relish!