I got this recipe from the Cooking for Your Family board at Babycenter.
Slow Cooker French Dip Sandwiches
approx 3 1/2 lbs beef chuck roast
16-oz. beef broth (1 1/2 cans)
1 10.5-oz. can condensed French onion soup
6-oz red wine
1 tsp garlic powder
salt and pepper, to taste
4-6 French rolls
sliced provolone cheese, optional
Trim excess fat off of beef roast and season meat all over with salt and pepper. Pour beef broth, condensed French onion soup, red wine and garlic powder into slow cooker and place beef roast into liquid. Cook on low for 6-8 hours. Slow cookers have different time intervals that you can select, so work with your cooker. Depending on how the settings on your slow cooker work, the time will vary. Since this is cooking in liquid, you don’t have to worry about the meat drying out in the same way you might if you were roasting the meat in the oven. Take beef out and rest it, covered with aluminum foil, for about 15 minutes. Slice beef and return to slow cooker on low or very low for 30 minutes.
Lightly toast the bread and evenly distribute cheese between rolls, if using. Divide beef onto rolls and spoon the beef juice* into ramekins or other small bowls and eat everything while it is hot. Serve each sandwich with its own dip. Seves 4-6. *Note: If there is excess fat in your au jus, simply pour it from the slow cooker into a large measuring cup and let it stand for about 5 minutes so the fat separates. Skim it off, then pour the juice into serving cups.