Catalina Pot Roast

1 boneless beef chuck roast
salt and pepper
1 bottle (8 oz.) Catalina Dressing
1 large onion, sliced
6 potatoes, peeled and cut in halves
8 large carrots, peeled and cut in halves
(You can use more or less potatoes and carrots depending on how much you like and the size of your slow cooker.)
chopped parsley

Add roast to slow cooker. Top with potatoes, carrots, onions, salt, pepper, and Catalina dressing. Add one cup water. Cook on low for 6-8 hours. (I always start mine off on high for the first hour or two and then turn it down on low.) You may have to add a little more water through out the day as it cooks.
When done, sprinkle with chopped parsley just before serving.

*This was very good! My family is not big fans of pot roast, but lapped this one up! The Catalina dressing gives it a very sweet and tangy flavor.