Set up the Instant Pot, press the sauté button, and place it on "sauté mode high ". Add the olive oil and let heat for two minutes. Add the onions and jalapeños. Sauté until softened, about 3 minutes. Add the garlic and sauté until fragrant, about 30 seconds.
Add the cumin, oregano, and chili powder, and toast the spices cooking for 2 minutes. Add the miso and tomato paste, and mix into onions. Add the diced tomatoes and mix.
Cancel sauté mode and put lid on the Instant Pot, place on "Pressure High" for 10 minutes.
Nestle the frozen block of Impossible Meat into the tomatoes and top with chili beans.
Allow the Instant Pot to naturally release for 10 minutes once the pressure mode has ended. Carefully release any remaining pressure manually. Open Instant Pot and break apart the Impossible Meat block, do this with a wooden spoon or, my personal favorite, a potato masher. Mix the now crumbles into the chili. Enjoy!
Serve with a variety of toppings. See notes