12 tbsp. unsalted butter, softened ¼ cup sugar 1 tbsp. vanilla extract 2 cups flour, plus more for dusting ½ tsp. kosher salt 4 oz. semisweet chocolate, melted Multicolored nonpareils, to decorate
Heat oven to 400°. Beat butter, sugar, and vanilla in a bowl with a hand mixer on medium-high speed until fluffy. Add flour and salt; beat. Transfer dough to a floured work surface, form into a disk, and roll until ⅓" thick. Using a 1¾" star cutter, cut out cookies; transfer to parchment paper-lined baking sheets, spaced 2″ apart. Bake until brown, 6–8 minutes; cool. Dip top of each cookie in chocolate; decorate with nonpareils. Chill until set.