Hearty Winter-Vegetable Soup

On a chilly day, this rustic soup – made with potatoes, leeks, butternut squash, and escarole – will warm you right up. Ingredients Ingredient Checklist 2 tablespoons extra-virgin olive oil 4 leeks, white and pale-green parts only, halved lengthwise, cut into 1-inch pieces, and washed well 3 celery stalks, cut on the bias into 1/2-inch-thick […]