Heat butter or oil in the same Kadai or Pan, in which you prepared the paneer mixture.
Add asafoetida and grated ginger, saute for few seconds.
Now add chopped tomatoes and mix well.
Cook the tomatoes until they are soft and mushy.
To this, add tomato puree and mix well.
Add turmeric powder, red chili powder, coriander powder, cumin powder, and salt to taste.
Cook the gravy for 7-8 minutes or until the oil separates from the sides and the raw aroma of tomatoes goes away.
Then add spiced paneer mixture and gently mix well.
Add 2 tablespoon Kadai Masala powder and mix well.
You can add more or less masala as per your preference. If you have used very hot red dry chilis to make Kadai Masala, initially add only a tablespoon of it. Taste and then add more Kadai masala if you need to.
If you need to adjust the consistency of the dish, add little water to it. However, do not add too much water; otherwise, the flavors of the curry will be diluted.
Cook the Kadai Paneer for 4-5 minutes. Taste and adjust the salt if required to. Then add crushed Kasoori Methi, mix well and turn off the heat.
Transfer the Kadai Paneer into a serving bowl and garnish with finely chopped coriander leaves.