How to Make It
Set Instant Pot to “sauté” and allow it to preheat 3 minutes. Add oil. Stir in onion, celery, and pancetta; cook, stirring constantly 5 minutes. Add ground pork and beef; cook, crumbling with the back of a wooden spoon, until lightly browned, about 5 minutes. Drain and discard fat.
Add tomatoes, salt, black pepper, crushed red pepper, and bay leaf, and stir to combine. Press “cancel” and secure the lid. Set pot to high pressure for 8 minutes.
Carefully release pressure, and remove lid. Discard bay leaf. Press “cancel” and then “sauté”, and stir in half-and-half. Simmer until hot throughout, about 3 minutes. Serve over zucchini noodles, and top with Parmesan.