Our Favorite Sunday Crock Pot Roast

1 beef roast
2 large onions sliced
2 cups baby carrots
6-8 potatoes peeled and quartered
3/4 C ketchup
1/3 cup red wine vinegar
2 TB worchestershire sauce
1 1/2 ts salt
1/2 C water
1 TB dried rosemary or 3 TB fresh rosemary

Trim fat off roast and put in crock pot. Add onions carrots and potatoes. (You can leave those three out all together, it works fine without them).

In a bowl mix ketchup, vinegar, worchestershirt sauce, salt and water. Pour over roast. Sprinkle rosemary over the top. Cook on low for about 6-7 hours and its really tender.