Heat up oil in a deep pan, add some curry leaves(optional), grated onion and fry till light brown.
Add ginger-garlic paste and continue frying on low flame. Add a few spoons of water in between for a smooth masala.
Add chilli powder, turmeric, coriander powder, cumin powder and salt, fry till the masala starts leaving the oil.
Add tomato and cook till they are mushy. Add little water and cook for another minute.
Add prawns. It should be cleaned and deveined. Mix well.
Add garam masala.Cover and cook for 5-7 minutes.
Cook for few minutes till the prawns are cooked and coated with the masala.
Squeeze some lemon juice. Off the flame.
Heat up butter and garlic together in a pan, let the garlic slowly get crispy while changing the colour lightly.
Pour this garlic butter over the prawns.
Garnish with coriander and serve hot.
