Spiced Parsnip Cupcakes
Preheat oven to 350 degrees. Peel and grate the parsnip. Whisk together flour, cardamom, baking powder, and salt. In a large bowl, whisk together brown sugar, eggs, oil, 2 teaspoons vanilla, and parsnip. Stir in flour mixture.
Line 12 standard muffin cups with paper liners. Divide batter among cups. Bake until a toothpick inserted in center of a cake comes out with a few moist crumbs attached, 18 to 20 minutes. Let cool completely in pan on a wire rack.
In a large bowl, with a mixer, beat cream cheese, butter, confectioners’ sugar, and remaining teaspoon vanilla until combined. Spread frosting onto cooled cupcakes.