Heat a pressure cooker with oil, saute the onions till it slightly changes colour.
Add the ginger garlic paste, then chopped tomatoes. Now add the masala paste along with all the spice powders. Simmer and cook with sprinkling some water till the tomato are mushy and the spices are cooked well.
Now chop brinjal and add to the gravy. Saute everything together well.
Sprinkle little more water, add the peanut powder. Water should be just enough to cover the vegetable.
Cover with lid and pressure cook for 1 to 2 whistle.
Gently release the pressure and transfer.
Serve with colour rice