Garlic-Chili Mashed Butternut Squash with Pine Nuts

We love the interplay of the sweet, savory and nutty flavors in Sabrina Ghayour’s take on butternut squash in her cookbook, “Bazaar.” This is our version of her recipe, which also plays up the textural contrast between toasted pine nuts and dense, creamy squash. The butternut is first roasted to caramelize its natural sugars, then is mashed with garlic and red pepper flakes. The mixture is finished on the stovetop to mellow the garlic and intensify the flavors. Ground sumac is a brick red Middle Eastern spice with tart, fruity notes. If not available, stir ½ teaspoon each grated lemon zest and lemon juice into the squash before transferring to a serving dish.