Heat oil in a pan.Rub coriander seeds between the palms & add in with onions.Saute well.meanwhile blend tomatoes ginger & green chillies into a paste. Add in diced green bell peppers. Give a good mix.Add tomatoes paste, turmeric powder, chilli powder.cook it for 2-3 mins.

Dunk in diced tomatoes yellow & red bell pepper. Give a good mix.time to add tomato ketchup salt & pinch of sugar. Mix well.Do not close or overcook the veggies. Keep it crunchy.