01 - In a large bowl, whisk together flour, granulated sugar, and salt. Cut in cold unsalted butter using a pastry blender or fork until mixture resembles coarse crumbs. Gradually add ice water, mixing gently just until the dough forms and holds together. Divide dough into two discs, wrap tightly in plastic, and refrigerate for at least one hour.
02 - In a small bowl, combine ground cinnamon, ginger, cardamom, cloves, nutmeg, allspice, and black pepper. Mix thoroughly and set aside.
03 - In a separate bowl, mix apple butter, brown sugar, and 1 teaspoon prepared chai spice blend until smooth and well combined.
04 - Preheat the oven to 375°F. Line two baking sheets with parchment paper.
05 - On a lightly floured surface, roll out one dough disc to 1/8-inch thickness. Use a 2 1/2-inch round cookie cutter to cut out rounds. Repeat with remaining dough disc.
06 - Arrange half of the dough rounds onto prepared baking sheets. Spoon 1 teaspoon apple butter filling onto the center of each round.
07 - Brush edges with egg wash. Place a second dough round over each filled base, pressing edges gently to seal. Crimp edges using a fork.
08 - Brush tops with egg wash. Combine topping sugar with remaining chai spice blend, sprinkle evenly over the cookies.
09 - Using a small knife or skewer, cut a slit or poke several holes in each cookie top to allow steam release during baking.
10 - Bake for 18 to 20 minutes or until surfaces are golden brown. Remove and transfer cookies to a cooling rack. Let cool before serving.