Preheat your oven to 350°F (175°C) and line a baking sheet with parchment paper.

Cream the unsalted butter, granulated sugar, and brown sugar until light and fluffy.

Add the egg and vanilla extract, mixing until well combined.

Whisk together all-purpose flour, salt, and baking powder in a separate bowl and then gradually mix this into the wet ingredients.

Fold in the chopped pistachios and dried cranberries gently into the dough.

Shape the dough into wreaths by rolling into balls and forming circular shapes before placing on the baking sheet.

Bake for 12–15 minutes, or until the edges turn slightly golden.

Let cool on the baking sheet for a few minutes before transferring to a wire rack; decorate with powdered sugar once completely cool.