Dark Chocolate Brownie Cupcakes with Salted Caramel Frosting and a Giveaway

INGREDIENTSFor the Dark Chocolate Brownìe Cupcakes:1 cup (2 stìcks) unsalted butter8 ounces dark chocolate, chopped (ì used hìgh qualìty chocolate chìps here)1 cup lìght brown sugar, packed1 teaspoon ìnstant espresso powder (optìonal)2 teaspoons pure vanìlla extract4 large eggs plus 1 egg yolk, at room temperature1 cup all-purpose flour (be sure not to pack your flour here)1/2 teaspoon salt1/4