Set the Instant Pot to sauté and add one tablespoon of olive oil.
Add the diced onion, celery, and carrots.
Add the diced red pepper, yellow squash, and zucchini.
Press Cancel.
Add the tomato paste, diced tomato, and the rinsed small white beans.
Pour the vegetable broth into the pot and top with the bay leaf.
Close the lid and set the timer to 10 minutes on HIGH PRESSURE/MANUAL.
Once the time is up, perform a controlled quick release.*
Remove the lid, discard the bay leaf, and serve.
Serve with 1-2 tablespoon of pesto per bowl and garnish with Parmesan.
Notes
*Refer to your pressure cooker’s manual for how to safely perform it’s features. A quick controlled release is manually and slowly releasing pressure. Keep away from face and watch hands to prevent burning.