In a pan, add 5 tbsp oil. Once it heats up, add ½ tsp mustard seeds, ½ tsp cumin seeds, a pinch of hing, and 2-3 chopped green chilli slits. Saute them.
Add ½ tsp turmeric powder and mix well.
Add the stuffed karela and mix well.
Sprinkle some water over the stuffed karela. Cover and cook the sabzi for 5-7 minutes on low flame until the karela is fully cooked.
Sprinkle the leftover masala over the sabzi and add ¼ cup of hot water from the sides.
Cover and cook the sabzi for an additional 2-3 minutes.
Garnish with coriander leaves and serve hot with roti or rice.