Ingredients

2 cups unbleached all-purpose flour, plus more for dusting 

1/2 cup granulated sugar 

2 teaspoons baking powder 

1/2 teaspoon kosher salt 

1/2 teaspoon ground cinnamon 

1/4 teaspoon freshly grated nutmeg 

1 tablespoon finely grated lemon zest 

1/2 cup (1 stick) cold unsalted butter, cut into pieces, plus more for griddle 

1/2 cup dried currants 

1/2 cup finely chopped candied citrus peel, such as lemon or citron 

1 large egg 

2 tablespoons whole milk 

Superfine or confectioners' sugar, for sprinkling 

Preparation

Line two baking sheets with parchment paper; set aside.

In a large bowl, whisk together flour, granulated sugar, baking powder, salt, cinnamon, nutmeg, and lemon zest. Using a pastry blender or your fingers, cut in butter until mixture is a sandy consistency. Stir in currants, candied citrus peel, egg, and milk until a soft dough forms. Gently knead to combine.

On a lightly floured surface, roll out dough 1/4 inch thick. Using a 2-inch fluted square cutter, cut out squares; transfer to prepared sheets. Reroll scraps once and cut out more squares.

Preheat a cast-iron griddle over medium. Lightly brush with butter. Working in batches, transfer dough squares to griddle and cook, turning once, until golden brown, about 1 1/2 minutes per side. Adjust heat as necessary. Transfer to a serving plate; sprinkle with superfine sugar, as desired. Serve immediately, or store in an airtight container at room temperature 3 to 5 days.