Mix sour cream, can of potato soup and Worcestershire sauce together in a large bowl.
Add thinly sliced potatoes to the mixture and mix until all potatoes are well coated.
Spoon 1/2 of the potato mixture into a crock pot sprayed with cooking spray.
Top with 3/4 cup of shredded cheese. Repeat layer with remaining potatoes and cheese.
Cook on HIGH for 3.5 to 4.5 hours (or on LOW 7 to 8 hours).
Serve topped with a sprinkle of paprika and chives.
Notes
You can serve these potatoes right out of the slow cooker, or transfer them to a serving dish. And if you are lucky enough to have leftovers, they store great in an airtight container in the fridge.