Mushroom Masala Curry

Name: Mushroom Masala Curry
Ingredients: 250 gm mushrooms; 2 tbsp mustard oil; 1 cinnamon stick small; 4-5 cloves; 1 tsp cumin seeds; 1 sprig curry leaves; 3 tbsp cashew nuts; 2 onion finely chopped; 1 tsp salt; 1/2 tsp ginger garlic paste; 1 tsp coriander powder; 3/4 tsp red chilli powder; 3/4 tsp kashmiri red chilli powder; 3/4 tsp garam masala; 1/2 tsp black pepper powder; 1/4 tsp haldi powder; 1 tbsp besan; 3 tbsp matar; 1/2 cup dahi; 2 tbsp fresh coriander; 3 large tomato finely chopped; 1/2 capsicum small cut long; 2 green chilli slit; as required Coriander chopped to garnish