2 tablespoons unsalted butter 1 tablespoon good olive oil 2 cups chopped yellow onions (2 onions) 1 (15 - ounce) can pumpkin puree (not pumpkin pie filling) 1 1/2 pounds butternut squash, peeled and cut in chunks 3 cups homemade chicken stock or canned broth 2 teaspoons kosher salt 1/2 teaspoon freshly ground black pepper 1 cup half - and - half
*Creme fraiche, grated Gruyere, or croutons for serving (optional)
1. Heat the butter and oil in a heavy - bottomed stockpot, add the onions, and cook over medium - low heat for 10 minutes, or until translucent. Add the pumpkin puree, butternut squash, chicken stock, salt, and pepper. Cover and simmer over medium - low heat for about 20 minutes, until the butternut squash is very tender. Process the mixture through the medium blade of a food mill. Return to the pot, add the half - and - half, and heat slowly. If the soup needs more flavor, add another teaspoon of salt. Serve hot with garnishes, if desired.