I got a crockpot cookbook for Christmas and I have been trying to use the crockpot more so dinner can be ready a little earlier. I made these the other night and they were super easy and very good.
1 lb. lean ground beef
1/2 c. italian seasoned bread crumbs
1 jar chunky pasta sauce
1 c. shredded mozzarella cheese
Mix meat, breadcrumbs, and egg together and form into meatballs. It should make 12 good size meatballs, but you could make more if you made them smaller.
Place meatballs in bottom of crockpot and pour pasta sauce on top. I cooked mine for 6 hours on high but you could do 8 hours on low if needed.
Place meatballs in rolls and top with mozzarella cheese.