1 pound sliced fresh mushrooms
1 (4 pounds) standing beef rib roast
1 (1.25 ounce) envelope onion soup mix
1 (12 fluid ounce) bottle beer
ground black pepper
Step 1: Prepare a slow cooker. Add the mushrooms and arrange them on the bottom part.
Step 2: Place the roast on top of the mushrooms.
Step 3: Add in the onion soup mix on top of the roast beef and pour in the beer.
Step 4: Season with pepper for extra flavour.
Step 5: Cook on low setting for 9 to 10 hours or until the roast is fork-tender.
Step 6: Place the roast beef and mushrooms on a clean serving bowl.
Step 7: Serve and enjoy!