01 -
In a large bowl, mix ground beef, pork sausage, panko breadcrumbs, parmesan cheese, eggs, salt, and garlic and herb seasoning until evenly combined using clean hands.
02 -
Shape the mixture into 12 large meatballs using an ice cream scoop or by hand, ensuring consistent size for even cooking.
03 -
Activate the sauté function on an 8-quart Instant Pot and heat 2 tablespoons of oil. Brown meatballs on all sides in batches for 1 to 2 minutes per side, then set aside without fully cooking.
04 -
Cancel sauté mode. Pour in 0.33 cup water and the marinara sauce, scraping the bottom to lift browned bits and prevent burning.
05 -
Place all meatballs into the Instant Pot, submerging as much as possible with sauce. Seal the lid and cook on high pressure for 7 minutes.
06 -
Allow the Instant Pot to release pressure naturally for 5 minutes, then perform a quick release for any remaining steam.
07 -
Serve the meatballs and marinara sauce over cooked pasta if desired.