In the same pan you sautéed the onions, add in 1 tbsp of oil and 1 tbsp of butter. Once butter is melted add in chopped ginger, garlic and thai green chili. Saute on low/medium heat for 1-2 minutes or until the raw smell of garlic is gone and garlic starts to change its color. Do not burn it.
Then add in chopped fresh fenugreek leaves (Methi) along with ½ tsp of salt. Mix well and cook for couple of minutes or until methi leaves are completely wilted.
Mix in cumin red chili powder, turmeric powder, coriander powder powder and garam masala. Cook for a minute. Then mix in thawed frozen peas without any water.
Mix well, cook for a minute, then add in onion gravy you made earlier. Mix well and add more water if you need based on your desired consistancy.
Add in another ½ tsp of salt and ¼ tsp of sugar. Mix well and taste. Add more salt if needed.
Cover and let it cook for 2-3 minutes on medium heat while stirring couple of times during this step.
Once cooked, garnish it with heavy cream (optional), kashmiri red chili powder mixed in hot melted butter and chopped cilantro. Serve it with hot parathas and enjoy!