Capsicum ( bell pepper ) Tomato Recipe

Capsicum in tangy tomato gravy tastes just awesome, I've added ketchup to this to make it little sweet.
Ingredients :-

1. 2 large green capsicums/bell peppers
2. 1 large onion, finely chopped
3. 1/4 tsp ginger garlic paste
4. 2 tomatoes
5. 1 tsp mustard seeds
6. 1 tsp red chili powder
7. 1/4 tsp turmeric powder
8. 1 tsp coriander powder
9. salt to taste
10. few curry leaves
11. 1 tbsp oil
12. 1/2 cup water
13. 2 tablespoon tomato ketchup (optional)
14. chopped coriander leaves for garnish

Method :- 

1. Heat oil in a pan, Add ginger-garlic paste, curry leaves and mustard seeds, saute for about 2 mins.
2. Add chopped onions and cook till it turns golden brown.Add salt to this mixture.
3. Add the chopped capsicums and tomatoes and stir it well.Now add chili powder and coriander powder, stir it well and cook for about 5 minutes.
4. Add a 1/2 cup of water and tomato ketchup, cook for approx 10-12 mins with lid on low to medium flame. Allow the gravy to thicken.
5. Garnish with chopped coriander leaves.Serve with rice or rotis