Easy Instant Pot meatball soup with homemade or frozen meatballs in under 20 minutes flat! A healthy low carb and keto friendly dinner you'll love in a Ninja Foodi pressure cooker too.
Set pot to saute and add olive oil. When it is hot add onion, celery, carrots, garlic and all of the seasonings. Cook until onions begin to soften, a few minutes should do it. Then turn pot off.
Add tomato sauce and broth, stir contents.
Drop in frozen meatballs and stir again.
Close lid and steam valve and set to pressure cook high for 15 minutes. Do a quick release of steam when done.