Spinach & Artichoke Galette

Ingredients

• 1 3/4 cups all-purpose flour
• 1 teaspoon kosher salt
• 1/4 teaspoon freshly ground black pepper
• 1 stick plus 2 tablespoons cold unsalted butter, cut into cubes
• 1/3 cup ice water
• 1/2 cup crème fraîche
• 1/2 garlic clove, finely grated
• 1/2 teaspoon hot sauce
• 1/2 teaspoon finely grated lemon zest
• Kosher salt
• Freshly ground black pepper
• 1 cup shredded parmesan cheese
• 5 ounces frozen chopped spinach, thawed and squeezed dry
• 1 (14-ounce) can artichoke hearts, drained, quartered, and patted dry
• 1 large egg beaten with 1 tablespoon of water
• Thinly sliced scallions, for garnish