Having an easy to make recipe like this Crock Pot Meatball Sub recipe helps me get everything done for the holidays and have a great meal on the table for my family. This recipe has only 4 ingredients and as long as you have a crock pot, and who doesn’t these days you can have dinner on the table in under 4 hours if you are in a hurry or it can cook for the standard 8 hours in a crock pot on low.