Fudge Brownie Cupcakes + Chocolate Chip Cookie Dough Frosting Ingredients Cupcake 4 oz bittersweet chocolate, chopped (used Ghirardelli) 1 stick unsalted butter, cubed 1 1/4 cups sugar 1 tsp vanilla 3 large eggs 3/4 cup flour 1/4 tsp salt Frosting 1 stick butter 3/4 cup light brown sugar 1 tsp vanilla 1 1/4 cup