Place everything except for the sour cream, cornstarch, heavy whipping cream in the crock pot.
Cover and cook on low for 6-7 hours or on high for 3-3.5 hours until the potatoes are the tenderness that you desire.
Then stir in the cornstarch into the heavy whipping cream. Stir this mixture and the sour cream into the crock pot. Cover and cook on low for 30 minutes or on high for 15 minutes until the soup has thickened.
Serve with your favorite type of cracker or rolls and enjoy!
Notes
*Refrigerate the leftovers in an air tight container for up to 5-7 days. *You can use milk instead of heavy whipping cream in this recipe. The soup will not be as creamy but will reduce the calories.