MINT JULEP CUPCAKES

Steps:

• For the vanilla-bourbon cupcakes: Position a rack in the center of the oven, and preheat to 350 degrees F. Line a 12-cup muffin pan with paper liners.
• Whisk together the flour, baking powder and salt in a medium bowl. Split the vanilla bean lengthwise with a paring knife, and scrape down the length with the back of the knife to remove the seeds. Add the seeds and granulated sugar to the bowl of a stand mixer, and beat on medium-high speed for 1 minute. Slowly add the butter, and beat until pale and fluffy, about 5 minutes. While continuing to beat, add the eggs 1 at a time, scraping down the bowl with a spatula as needed. Add the bourbon, and reduce the mixer speed to medium-low (the mixture will look curdled, but that's OK). Beating after each addition until just combined, add in 1/3 of the flour mixture, 1/2 the milk, 1/2 the remaining flour mixture, the remaining milk, then the remaining flour mixture. Divide the batter evenly among the liners in the prepared tin. Clean the mixer bowl and paddle attachment.
• Bake the cupcakes until a toothpick inserted in the center comes out clean, 18 to 20 minutes, rotating halfway through. Cool the cupcakes in the tin on a wire rack for 5 minutes. While they are still warm, brush the tops with the remaining 2 tablespoons bourbon if desired. Transfer them to the rack to cool completely.
• For the minty frosting: Mix the butter, sugar and salt in the bowl of the stand mixer fitted with the paddle attachment on low speed until the sugar has been incorporated, about 2 minutes. Add the liqueur and peppermint extract, and mix on medium-high until smooth. Add the half-and-half, and beat until incorporated. Refrigerate the frosting for about 15 minutes to firm up.
• Pipe the frosting onto the cupcakes with a pastry bag fitted with a 1/2-inch plain round tip or a plastic bag with a tip cut off, using all the frosting. Decorate with mint sprigs and sanding sugar.