On Instant Pot, press Sauté and wait until display says Hot. Add ground beef and Italian seasoning. Cook for 4-5 minutes, constantly breaking meat into small pieces with spatula. Meat won’t get browned and some pink pieces are OK.
Press Cancel and add bell peppers, celery, onion, garlic, rice, tomato sauce, diced tomatoes, chicken broth, salt, pepper, sugar and vinegar. No need to stir but you can.
Close the lid, move pressure valve to Sealing and press Pressure Cook on High or Manual for 8 minutes - with white rice, for 13 minutes - with brown rice.
After let soup sit for 5 minutes and then release pressure using Quick Release method by turning pressure valve to Venting.
Add parsley and serve warm with a dollop of yogurt or sour cream.
Video
Notes
Store: Refrigerate in an airtight container or inner Instant Pot liner with a fitting lid for up to 5 days.
Freeze: Fully cook, cool completely and freeze in an airtight container for up to 3 months. Thaw on a stovetop covered on low.
Ground meat: Feel free to use ground turkey, ground chicken or lean ground beef.
Colour of peppers: Green pepper adds nice more bitter taste which I love but now many don't. You can mix and match any colours and shapes of peppers.