Heat oil in a frying pan.
Fry the dry red chillies and keep aside.
Fry coriander seeds, till its aroma comes out and keep aside.
Fry black pepper, cinnamon sticks, cloves and cumin seeds together and set aside.
Stir fry pearl onions, till they turn brown.
Blend all these fried ingredients in a mixer grinder.
Pressure cook chopped mutton with turmeric powder, salt and the blended mixture.
Stir fry onions in a pan, till brown in color, followed by green chillies, crushed garlic and ginger and chopped tomatoes.
Add these to the cooked mutton and boil well.
When the Kerala Nadan Mutton curry turns brown, turn off the flame.
Garnish Kerala Nadan Mutton curry with curry leaves, coriander leaves and a spoon of coconut oil.
:- Kerala Nadan Mutton curry is ready.
:- Serve hot Kerala Mutton Curry with rice.