Weekend before last, I bought, among other things, a butternut squash at the farmers' market. I had not intended to buy it, but it beckoned. It is fall. It is time to cook fall things. Such as duck confit, and sausage, and bacon, and cassoulet. And rich, soul-soothing soups.
Squash soup is easy, nutritious, and delicious. I served it to a bunch of eighth-grade boys. One of them said, "This is phenomenal soup." I was surprised they were eating it, let alone using the word "phenomenal" with regard to food.
This recipe will work with any similar squash (pumpkin would be great). Use onion if you don't have leeks. The method is standard: sweat the onion in some fat, salt it, add the squash, cook it a little, add enough half-and-half to cover, simmer till the squash is tender. Purée, taste for seasoning, and perfect it—you may want to add some lemon juice or white wine vinegar; taste and think.
I took some extra time to clean and sauté the seeds in some butter for a crunchy garnish. Fresh or whole, dried thyme leaves are the key to the flavor of this soup (don't use the old, powdered thyme sitting in your spice rack). I still have fresh thyme in the garden and that makes a good finishing garnish, and last, some yogurt, which I always have on hand (high point of last week: my Indian neighbor came over to ask for some starter as hers had gone bad, which happens, and she knows yogurt; I'm glad ours didn't go bad at the same time).
Soup is a technique in Ruhlman's Twenty, as is sauce, and this could easily be the sauce for the scallop dish (we're in prime scallop season—lucky East-coasters are, anyway). I love how soups and sauces are often interchangeable. I'd never serve a bowl of Sauce Robert, or a bowl of Hollandaise, but most thick, puréed soups can be used as sauces. What a killer use of leftover butternut squash soup that would be.
Butternut Squash & Leek Soup
- 2 large leeks, white and light green parts only, cleaned and julienned (save dark green parts for stock)
- 2 tablespoons butter, plus 2 teaspoons or so for the seeds (if using)
- Salt to taste
- 1 butternut squash, peeled, cut in large dice, seeds reserved
- 2 teaspoons whole dried thyme leaves (not powdered thyme; this is critical)
- 1 quart half-and-half (you won't use it all; you can get by with 2 cups if you wish)
- ½ cup Greek or homemade yogurt, crème fraîche, or mascarpone
- 2 teaspoons fresh thyme leaves (optional)
- Sauté the leeks in 2 tablespoons butter over medium heat until they're soft, hitting them with a big four-finger pinch of salt (a teaspoon for the ladies who are measuring).
- Sauté the rinsed reserved seeds in the remaining 2 teaspoons butter till golden brown and crisp, about 10 minutes over high, then low heat.
- Add the squash and the dried thyme to the leeks and stir to heat through for a few minutes. Add just enough half-and-half to cover the squash. Bring to a simmer and cook on medium-low for 15 minutes or so.
- Purée the squash in a blender (or in the pot with an immersion blender) till uniformly smooth.
- Serve garnished as you like with yogurt, toasted seeds, and fresh thyme.
Other links you may like:
- My other soup posts: corn tortilla soup, French onion soup, and cream of celery root soup.
- Learn more about different types of squash.
- Pumpkin seeds are a great snack and garnish; here are a few recipes for utilizing them.
- Have extra pumpkin purée or roasted squash? Bake your own delicious pumpkin scones.
© 2012 Michael Ruhlman. Photo © 2012 Donna Turner Ruhlman. All rights reserved.