Line a 15x10-inch baking sheet with parchment paper. Set aside. Preheat oven to 350 degrees.
In a large mixing bowl, beat butter with powdered sugar and vanilla extract until creamy. Add in flour and beat until combined. Fold in dried cranberries.
Drop dough into the center of the baking sheet and press into a rectangle about 12x10 inches and 1/4 inch thick.
Bake for 20-25 minutes until edges are lightly browned. Remove from oven and cut into strips with a pizza cutter. Once cooled, drizzle with melted white chocolate and sprinkle with white sanding sugar if desired. Enjoy!
Notes
This cranberry shortbread makes a perfect holiday treat or gift.