Slow-Cooker Cauliflower, Potato and White Bean Soup  (NYT)
YIELD:6 servings 
TIME:8 hours and 25 minutes 
INGREDIENTS
-  1 pound Yukon gold potatoes, scrubbed, peeled and cut into 1- to 2-inch chunks  
-  1 pound cauliflower, chopped into large bite-sized florets and stems  
-  2 (15-ounce) cans cannellini beans, drained 
-  ½ yellow onion, minced 
-  3 garlic cloves, smashed and minced 
-  3 ½ cups vegetable stock  
-  3 tablespoons unsalted butter 
-  2 tablespoons dry white wine 
-  1 sprig fresh thyme or 1/2 teaspoon dried thyme 
-  ½ teaspoon garlic powder 
-  Coarse kosher salt and black pepper 
-  1 teaspoon lemon juice (about 1/4 lemon) 
-  8 ounces sour cream (1 cup), at room temperature  
-  ½ cup chopped chives (about 1 small bunch) 
-  Potato chips, preferably sour cream and onion, for topping 
-  Shredded Cheddar, for serving  
PREPARATION
-  In a 6- to 8-quart slow cooker, combine the potatoes, cauliflower, beans, onion, garlic, vegetable stock, butter, wine, thyme, garlic powder and 1½ teaspoons kosher salt. Cover and cook until the vegetables are very tender, about 8 hours on low.  
-  Remove and discard the thyme sprig, and turn off the slow cooker. Add the lemon juice. To make a completely smooth and creamy soup, purée the ingredients using an immersion blender. (Or, purée the soup in a blender in two batches, transferring the puréed soup to a different pot.) To make a textured, chunky soup, smash the ingredients using a potato masher in the slow cooker. 
-  Stir in the sour cream and chives. Taste and add additional salt if necessary. Serve in bowls topped with black pepper, crushed potato chips and shredded Cheddar.  
-  For leftovers, gently reheat the soup on the stovetop or in the microwave until it just barely bubbles around the edges; don’t let it boil or the sour cream will break.