I found these totally cute cupcakes on Tasty Kitchen. I loved the recipe for the cupcakes, but thought the frosting was less than flavorful. I would use this recipe for browned butter frosting instead.
In med. bowl, place powd. sugar, vanilla, & 3 Tbsp. milk. In saucepan, heat butter over med. heat, stirring constantly, until medium brown. Pour butter over powd. sugar mixture. Beat 1 min. or until smooth. Add remaining milk, if necessary. Generously frost cupcakes.