Crockpot Italian Pot Roast

1 (2 1/2 pound) boneless beef round roast
1 medium onion, sliced
1/4 teaspoon salt
1/4 teaspoon pepper
2 (8 ounce) cans no-salt-added tomato sauce
1 (0.7 ounce) package Italian salad dressing mix

Slice roast in half and place in a 3 1/2 quart crock pot. Add onion and remaining ingredients. Cover and cook on HIGH setting 5 hours or until roast is tender. Or, cover and cook on HIGH setting 1 hour; reduce to LOW setting and cook 7 hours.

Slice meat to serve.

Serves 8.

5 WW points