Clean and devein the Prawns .To this add in Salt, turmeric powder and pepper powder mix well and set aside for 30 mins to marinate.
Heat oil in a pan and add in the marinated prawns .The prawns will start leaving water and cook.
Once they are almost cooked remove from the pan and set aside. In the same pan add in chopped onions.
Next add in ginger garlic and red chilli paste and curry leaves cook till they turn to a slight golden brown colour. Add Red Chili powder, Turmeric powder and salt.
Mix well and cook for 2 mins, Next add in the water so that the masala becomes saucy.
Cook in a high flame till the water evaporates and the masala gets coated over the prawn. When the moisture completely gets dried and masala coats the prawn well. Switch off the flame.