Add lentils, rice, water, green chiles, onion and seasonings into the Instant Pot. Stir well.
Close lid and turn knob to sealing position. Pressure cook on HIGH for 20 minutes. Allow a 10 minute natural pressure release (meaning, leave it alone to rest). Quick release any remaining pressure by manually turning the knob.
Open lid and stir, fluffing up the lentil and rice mixture.
Prepare tacos by filling with lentil taco mixture. Add favorite taco toppings such as lettuce, salsa, avocados, cheese and sour cream. Serve and enjoy!
Notes
Other ways to eat this: Taco Salad, Nachos, Burritos, Quesadilla, Burrito Bowl, Taquitos