Pour sauce onto beef, add halved garlic cloves and set slow cooker to cook for four hours on high or six to eight hours on low.
You will be able to tell if the meat is ready as it will easily break off with a fork.
Remove the beef from the slow cooker. Drain off some of the sauce, but not all of it. Place it straight into the dish you are going to serve it from. I used a lasagne dish.
Using forks pull apart the roast, then gently pour half a cup of the sauce over the meat. The sauce has beautiful flavours so keep it for something else!
Allow the family to serve themselves their meat and other accompaniments. We served it up with a roast pumpkin salad.
Recipe by Planning With Kids at https://planningwithkids.com/2013/04/22/slow-cooker-balsamic-beef/