Boil 2 potatoes and 1/2 cup mixed veg (peas+corn+carrots+runner beans). Peel the potatoes and chop roughly.
Wash two large green peppers (capsicum) and wipe completely dry with a kitchen towel. Cut out the stalks and remove the seeds. Retain the stalks. Heat 2 tbsp oil and fry the peppers in the oil on medium heat while turning over frequently. Remove from the oil.
To the same oil, add 1/2 Finely choped onion, 1" finely chopped ginger, 2 finely chopped green chillies, 1/4th tsp turmeric powder and 1/2 tsp chili powder and stir. Fry until the onions are translucent. Add 1/2 cup pre-cooked shrimp and cook until the onions are golden brown.
Add the chopped boiled potato, mixed veg and 1tsp garam masala (curry powder) + 1/2 tsp dry mango powder (amchur / chaat masala) and salt. Mix well and cook for 5 min. Roughly mash the cooked vegetables.
Stuff the capsicums with the mashed veg and plug in the removed stalks. Cook in a pre-heated oven at 200 deg C for 20 minutes. Turn over 2-3 times.