1️⃣ Cream the butter and sugar
In a large bowl, beat the softened butter and powdered sugar until smooth and fluffy. Mix in the vanilla extract.

2️⃣ Add the dry ingredients
Gradually add the flour and mix on low until the dough starts to come together.

3️⃣ Fold in the mix-ins
Gently fold in the pistachios and cranberries until evenly distributed. Do not overmix.

4️⃣ Shape and chill the dough
Divide dough in half. Roll each into a 1½–2 inch diameter log. Wrap tightly and chill for at least 2 hours.

5️⃣ Slice and bake
Preheat oven to 350°F. Slice dough into ¼-inch rounds and place on lined baking sheets. Top with coarse sugar or salt if using. Bake for 12–14 minutes, or until edges are lightly golden. Cool on sheet for 5 minutes, then transfer to a wire rack.