Potato soup is rich, delicious, and inexpensive. Traditionally made in a soup pot with several steps of cooking and stirring, this recipe has been adapted for the crockpot, making for a hearty meal without having to stand over the stove. Simple white potatoes cook along with onions and garlic in the slow cooker before being coarsely mashed. A sort of roux is made with evaporated milk and flour and cooked in the crockpot until thick. Then these mixtures are combined, with the addition of sour cream and herbs, making for a creamy soup with a deep flavor. This soup is an affordable dish for a crowd. You can serve it with a variety of toppings to sprinkle on, such as cooked, crumbled bacon, shredded cheddar cheese, and chopped green onions.