Easiest thing ever.
3-4 lb. beef roast
1 envelope onion soup mix
1/2 c water
Place roast into the slow cooker. Stir soup into 1/2 c water, then pour over roast. Cover; cook on low 8 hours, or until cooked through.
I shredded all of the meat, and divided it into three bags for the freezer. All of the "drippings" were poured into a bowl, then put into the fridge. The next morning I spooned off the fat, then divided the liquid into two containers for the freezer. This will all make for super easy meals later! If you want the roast that night, you can add potatoes, onions and carrots to the slow cooker before putting in the roast and soup/water.