2poundspotatoesYukon Gold, peeled and diced into small cubes
1yellow onion
2clovesgarlicminced
3tablespoonsbutter
⅓cupall purpose flour
1cupwhole milk or half-and-half
½cupheavy cream
1teaspoonsmoked paprika
1teaspoonDijon mustard
1tablespoonwhite wine vinegar
1cupsharp white cheddarshredded
½cupsour cream
1teaspoonKosher salt
½teaspoonblack pepper
1tablespoongreen onionsthinly sliced, for topping
Instructions
Peel and dice 2 lbs of Yukon gold potatoes.
Thinly slice 1 large leek (or dice a large onion) and mince 2 garlic cloves.
Melt butter in a skillet over medium heat. Add leeks (or onion) and cook until soft, about 5-6 minutes. Add minced garlic and cook for 1 more minute.
Sprinkle flour over the leeks/garlic and stir for 1-2 minutes.
Gradually whisk in whole milk, stirring until thickened.
Stir in Dijon mustard and smoked paprika.
Add diced potatoes, the leek-garlic roux mixture, and vegetable broth to the slow cooker.
Season with Kosher salt and black pepper.
Cook on low for 6-8 hours or high for 3-4 hours until potatoes are tender.
Stir in heavy cream, sharp white cheddar cheese, and white wine vinegar.
Let the soup cook for another 20 minutes on low. Stirring occasionally, especially after adding the cream and cheese, will help ensure a smooth texture.
Optionally, blend part of the soup with an immersion blender or a regular blender for a smoother texture.
Stir in crème fraîche or sour cream before serving.
Ladle into bowls and garnish with toppings.
Notes
Cook the flour with the onion or leeks for 1-2 minutes before adding milk to remove the raw flour taste and ensure a smooth texture.
Add shredded cheddar after the soup has cooled slightly to avoid gritty, separated cheese.
For a thicker soup, blend half with an immersion blender, but leave some potato chunks for texture.
Dice potatoes into small, uniform cubes for even cooking and perfect potato chunks in every bite.
Stir regularly after adding cream and cheese to prevent clumping and ensure a smooth finish.
If freezing, leave out the sour cream and add it fresh when reheating for the best texture.