- 1 (12 fluid ounce) can or bottle Irish stout beer (such as Guinness®)
- 1 (10.75 ounce) can condensed cream of mushroom soup
- 1 (1 ounce) package dry onion soup mix (such as Lipton®)
- 1 small onion, chopped
- 1 clove garlic, minced
- 1 (2 1/2 pound) boneless beef chuck roast
- 1 pinch salt and ground black pepper
- 1 (10 ounce) bag baby carrots
- 1 (16 ounce) package baby red potatoes, cut in half
- 3 stalks celery, cut into 3-inch pieces
- Mix beer, cream of mushroom soup, onion soup mix, onion, and garlic together in a slow cooker. Season beef chuck roast with salt and pepper, and place in the slow cooker. Arrange the carrots and potatoes around the meat.
- Cook on Low for 6 hours, then add the celery. Continue cooking until the roast falls apart easily and the potatoes are softened, about 2 hours more. Serve the meat and vegetables with the remaining gravy on top.