Apple Galette with Sourdough Crust – The Travel Bite

Ingredients

• 1/2 cup (1 stick) cold butter, cubed
• 2 1/2 teaspoons sugar
• 1/4 teaspoon salt
• 3/4 cup all-purpose flour
• 1/2 cup cold sourdough discard
• 2-3 medium apples, thinly sliced
• 2 Tablespoons brown sugar
• 1 Tablespoon lemon juice
• 1/2 teaspoon cinnamon
• 1/4 teaspoon ground ginger
• 1/8 teaspoon ground nutmeg
• 1/8 teaspoon sea salt
• 1 Tablespoon cornstarch or arrowroot powder
• 1 egg, lightly beaten
• 1 Tablespoon turbinado sugar