Preparation

1 Prepare pot roast vegetables: cut potatoes in half (or into quarters if large), onions into 1/2-inch wedges, and carrots and celery into 2-inch pieces; set aside.
2 Combine gravy mixes, flour, salt and pepper in large bowl. Add vegetables to bowl; toss to coat well. Remove vegetables from flour mixture and place in 5 to 6-quart slow cooker.
3 Add beef roast to bowl, turning to coat evenly with flour mixture. Remove roast and place in slow cooker in center of vegetables.
4 Whisk beer into remaining flour mixture until smooth; add to slow cooker. Cover and cook on LOW 10 to 11 hours, or on HIGH 6 to 7 hours, or until beef and vegetables are fork-tender. (No stirring is necessary during cooking.)
5 Remove roast and vegetables. Skim fat from gravy. Carve roast into thin slices. Serve with vegetables and gravy. Sprinkle with parsley, if desired.

Source: www.beefitswhatsfordinner.com