In a cooking pot. Add in instant oats and roast them for 2 to 3 minutes until toasted. Remove it to a bowl. Dry roast moong dal for 2 to 3 minutes in the same pan till aromatic.
Now cover moong dal with 2 cups of water and bring it to a boil. Cover and simmer for 15 mins until the dal is cooked. At this point the water must be dried in the dal as well.
Once dal is cooked, add in 4 cups of boiling water, season with salt, turmeric powder and mix well. Once it starts to boil again, add in the roasted oats and mix well. It will start to thicken. Cover and cook for 4 to 5 minutes until oats cooked. Now turn off the heat.
Heat ghee in a separate pan and add peanuts, pepper, cumin, asafoetida, green chillies, ginger, curry leaves and let them sizzle and get golden.
Heat remaining ghee in the kadai and add mustard, channa dal, urad dal, cashews, raisans, pepper, cumin and mix well.
Pour this over the oats pongal and mix well. Serve with any chutney.