Turn Instant Pot to Saute function and heat olive oil
Add onion, ginger, and garlic, and saute until onions are translucent (approx 5 mins)
Add the red curry paste (if using) and saute for another 30 seconds
Add vegetable broth to deglaze the pot, and turn off Saute function
Add the carrot, sweet potato, and both kinds of lentils. Stir to combine.
Mix in the spices. Add the can of fire roasted tomatoes on top, but do not stir.
Put on the lid, turn the knob to Sealing, and set to high pressure for 8 minutes.
Once the time is up, allow to naturally pressure release for 10 minutes before venting.
Stir well and serve garnished with cilantro.