If you're unfamiliar with what Salisbury steak is, you might walk down the frozen food aisle of your local supermarket and marvel at all those upscale brands offering steak as a frozen TV dinner.

Quick & easy Slow Cooker Salisbury Steak Meatballs are an easy prep dinner that starts with frozen meatballs. The best part is the rich brown gravy sauce that creates itself from packets of seasoning ...