Prep the ingredients. Dice the shallots and slice the onions.
Turn the Instant Pot onto SAUTE mode. Add 2 tablespoons of vegan butter to the Instant Pot and let melt.Add the shallots and mushrooms and sauté 3-4 minutes, while stirring frequently.
Next, add the Arborio rice and saute for 2-3 minutes, stirring frequently. Now, pour in the vegan white wine and deglaze the pan. Scrape the bottom to make sure there isn't anything stuck to the bottom of the pot. (We want all the flavor to infuse the rice)
Hit the CANCEL button on the Instant Pot.Add the vegetable stock, salt, pepper, thyme, truffle slices, and nutritional yeast. Stir to combine everything.
Put the lid on the Instant Pot and set it on MANUAL mode for 5 minutes. Once the 5 minutes are done, QUICK RELEASE the steam valve and let the steam escape. Remove the lid carefully once all the steam has stopped coming out of the valve.Taste test and add more salt and pepper if needed. Serve the creamy truffle risotto topped with fresh herbs and roasted pine nuts.