Potatoes and leeks cook slowly in the slow cooker resulting in a great tasting soup that's easy to make and requires very little hands on time. This dairy free potato soup makes the perfect main course soup or side dish addition to meals.
Cut the leeks into two pieces where the dark green turns to light green. Slice the white and light green part of the leek into thin circles.
Place the sliced pieces into a colander and rinse well. Once clean, allow to thoroughly drain.
Heat olive oil in a skillet. Add leeks and garlic and saute until softened.
When cooked, transfer to the crockpot along with the potatoes, vegetable stock and 4-6 sprigs of thyme.
Cook for 6 hours on low heat or for 4 hours on high heat.
When the potatoes are tender. Transfer ⅔ of the soup to a blender and blend until smooth. Use a potato masher or the back of a spoon to coarsely mash the remaining ⅓ of the soup in the pan.
Return the soup in the blender to the pan with the rest of the soup and add salt and black pepper to taste and more fresh thyme if desired.
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Notes
Be sure to check the full post above for substitutions, storage information, serving ideas, and more.
For a creamier potato leek soup blend all the soup. You can use an immersion blender to blend it right in the slow cooker or transfer all the soup to a regular blender to blend it.
Don't use waxy potatoes for potato soup. These potatoes tend to cook up a little bit gummier so their texture doesn't work all that well for soup.
For a tastier bowl of soup, add on a crunchy topping such as homemade croutons or crunchy onions.