Preheat your oven to 350°F (175°C) and prepare a baking sheet by lining it with parchment paper.

Whisk together the all-purpose flour, sugar, baking powder, and salt in a large bowl until well combined.

Cream the softened unsalted butter and remaining sugar in another bowl until light and fluffy. Add the eggs and vanilla extract, mixing after each addition.

Fold the dry mixture gradually into the wet ingredients. Gently incorporate the dried cranberries and chopped pistachios.

Shape half of the dough into a one-inch thick log on the prepared baking sheet. Repeat for the second half.

Bake for 25-30 minutes, or until the logs are golden brown. Allow them to cool slightly before slicing diagonally into half-inch pieces.

Arrange the slices cut side down on the baking sheet and bake for an additional 10-15 minutes until they are crisp.

Cool completely on a wire rack before serving or storing.

Optional: Drizzle with melted chocolate or sprinkle with festive spices.