rich & easy clam chowder

This recipe feels like CHEATING because it's SO EASY and SO YUMMY!

1 small onion, diced & sauteed in butter
3 - 10 3/4 oz. cans Cream of Potato Soup
2- 10 3/4 oz. New England Clam Chowder
2- 6 1/2 oz. chopped/minced clams, rinsed thoroughly (I HATE the surprise grit in your chowder)
1/4 c. butter, cold and cut into pieces (+ plus butter for sauteeing onion)
1 pt. 1/2 & 1/2 (regular or fat-free- makes NO difference in taste)
2 dashes of salt
1 dash of pepper
3 dashes of thyme
parsley, for color

1. Combine all ingredients in slow cooker.
2. Cover and cook on LOW for 3-4 hours.