Crumble the paneer and add to karela pulp.
Heat 2 tsp oil in a non-stick pan, add cumin seeds. When it is cooked, add chopped onions, ginger, garlic, and green chili and fry until onion is transparent.
Add chopped tomatoes and fry for just a minute.
Add the dry spices in the tomatoes (salt, chili powder, turmeric, and garam masala)
Add the crumbled paneer and karela pulp mixture.
Mix and fry until cooked. Add cilantro and mix. Taste for salt.
Take off heat and let cool.
When the mixture is cool, stuff it inside the karela in a gentle, tight manner. Either close the cut part with a toothpick or tie with thread.
Now heat 2-3 tbsp oil in a non-stick pan. Add the stuffed karelas and cook. Keep turning so that all the sides get brown.
Before serving, grill in a toaster oven for 10 min so the outside of karela is crunchy.
Note: You can omit step 9 and 10 and deep-fry the stuffed karelas.