Harissa Squash and Feta Galette from washington post

yum

MAKE AHEAD: The dough for the galette crust needs to be refrigerated for at least 1 hour and up to overnight.
1/2 cup dark or light rye flour
2 cup all-purpose flour
1 teaspoon kosher salt
6 tablespoons chilled vegan shortening (may substitute butter or coconut oil)
4 to 6 tablespoons ice water
2 teaspoon apple cider vinegar

For the galette
2 pounds butternut or other winter squash, peeled, seeded and cut into 1-inch chunks
2 cup harissa (store-bought or homemade; see related recipe and headnote), or more for serving
3 ounces feta cheese, crumbled
1 large egg yolk
2 teaspoons whole milk
Cilantro leaves, chopped, for garnish

For the crust: Combine the rye flour, all-purpose flour, salt and shortening in a food processor; pulse a few times, until the shortening is mostly the size of peas, with some bigger pieces. Add 4 tablespoons of the ice water and the vinegar; pulse a few times, until the dough mostly comes together as one lump with a few shaggy pieces. Turn the dough onto a sheet of plastic wrap and squeeze it to see if a ball forms. If it is too dry to come together, sprinkle with more ice water, 1 tablespoon at a time, mixing with your hands until it does. Press the dough into a disk, wrap it tightly in the plastic wrap and refrigerate for at least 1 hour (and up to overnight).  4 to 6 servings