Creamy Corn Chowder

3/4 cup onion, chopped
2 tablespoons butter or margarine
1 cup frozen hash brown potatoes
1 cup ham, cooked and diced
1 (10 ounce) package frozen corn
1 cup cream-style corn
1 (10 3/4 oz) can cream of mushroom soup, undiluted
2 1/2 cups milk
Salt
Black pepper
Parsley flakes

Combine onion, margarine, potatoes, ham, corn, cream of mushroom soup and milk in crock pot. Cover and cook on HIGH for 4 to 5 hours.

Salt and pepper to taste. Garnish with parsley flakes.