For this I use the meatloaf meat from the butcher department in my grocery store. The reason is shortcut, shortcut, shortcut! It's already well seasoned and makes for great meatballs.
2 lbs. Meatloaf (raw of course)
1 can or jar of pasta sauce
1/4 cup water
Mix meatloaf and egg. Add enough breadcrumbs to bind. Lightly spray crockpot oil. Make meatballs about the size of a medium sized meatball. Not too small and not too large. Place meatballs in crockpot and cover with sauce and water. Set to low and in about 6 hours you will have perfect meatballs.