In a large cast iron skillet with olive oil brown the beef on all sides, this is optional, but adds great flavor.
Add the brown roast to the crock pot along with the remaining ingredients.
Cook on low for 8 to 10 hours or high for about 5 hours.
Once the time is up you can remove the meat from the crockpot and place it onto a cutting board.
Slice the roast beef or shred and then return it to the crockpot for serving.
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Notes
Browning the Roast: Though optional, browning the roast before slow cooking adds a rich, caramelized flavor to the meat.
Vegetable Additions: You can also add sweet potatoes, parsnips, or even celery.
Leftover Storage: Store leftovers in the refrigerator for up to 3 days, or freeze for up to 2-3 months. Thaw in the refrigerator before reheating.
Thicken: Mix 2 tablespoons of cornstarch to 2 tablespoons or water until combined. Add to the broth and let it thicken on high heat in the slow cooker or on medium heat on the stovetop.