Set the Instant Pot® on Sauté mode and heat the oil for about 1 minute, then add the onion and sauté until they turn golden, about 5 to 6 minutes. Stir in the lentils, rice, cumin, coriander, ginger, cayenne pepper powder, salt, and turmeric. Add the cauliflower, potato, and 4 cups of water and stir well.
2. Press Cancel to turn off Sauté mode, close the lid, and set the Instant Pot® on Manual Low Pressure mode for 4 minutes.
When cooking time is complete, allow for Natural Pressure Release for 10 to 15 minutes, then use Quick Release for any residual pressure.
Once pressure is released, open pot and stir rice mixture well. Set the Instant Pot® to Sauté mode and stir in the green peas and cook for 1 minute.
To finish, heat the ghee or coconut oil in a small pan, add the cumin seeds, crushed red pepper, if using, and whole dried red chilies and cook until the mixture crackles and is fragrant, being careful not to burn the crushed red pepper. Pour the fragrant mixture over the khichuri and gently stir. Sprinkle on the lime juice and garnish with cilantro before serving.