01 -
In a large bowl, mix ground beef, pork sausage, Italian style panko breadcrumbs, grated Parmesan, eggs, salt, and garlic and herb seasoning thoroughly, preferably using clean hands until fully combined.
02 -
Shape the meat mixture into 12 large balls using an ice cream scoop or by hand, ensuring uniform size for even cooking.
03 -
Activate the sauté function on an 8-quart or larger Instant Pot and heat for 6 minutes. Add oil to the pot. Sear the meatballs in batches, browning each side for 1 to 2 minutes until lightly colored but not cooked through. Remove and set aside.
04 -
Cancel the sauté mode. Pour water and marinara sauce into the Instant Pot, stirring to release any browned bits from the bottom to avoid burn warnings.
05 -
Return all meatballs to the pot, submerging as much as possible in the sauce. Seal the lid and cook on high pressure for 7 minutes.
06 -
Allow the pressure to release naturally for 5 minutes before manually releasing any remaining steam.
07 -
Serve the meatballs and marinara sauce over cooked pasta if desired.