Press Sauté (Normal) and let the Instant Pot get hot.
Add olive oil.
Add onion, carrots, celery, zucchini, asparagus (if using), and baby spinach. Give everything a quick stir.
Add tomato puree, quinoa, and vegetable broth.
Add Italian seasoning, salt, and pepper.
Lock the lid and set the steam vent to Sealing.
Select Pressure cook and cook for 1 minutes on High Pressure.
When the cycle ends, switch the steam vent to Venting for a quick release.
Open the lid, taste, adjust seasonings, and serve warm.