I get frozen meat balls at Samís, and then I put about Ĺ the bag in my pressure cooker with a jar of your favorite sauce. Bring it to pressure then turn it off. Let it set 10 to 15 mins.
This puts the flavor of your sauce through out your meatballs. I figured out how a restaurant here makes their famous 4Ē meatballs. Mine are smaller but just as good, and fast.