Divide the batter evenly into greased tins. Bake for about 22-25 minutes, or until the tops are golden brown and a toothpick inserted in the cakes comes out clean or with just a few moist crumbs.
Whisk together powdered sugar, half and half and vanilla extract until smooth. Pour about 1 ½ tablespoons of glaze over each cake, starting in the center and letting it drizzle its way over the sides for the "drippy" effect.