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Vanilla Chocolate Swirl Frosting 1 1/2 cup confectioners sugar
2 teaspoons vanilla paste
1/8 cup cocoa

In a large bowl, beat together the vanilla paste (or extract)cream cheese and confectioners sugar until smooth. Frost 12 cupcakes. Add the cocoa to the remaining icing (there should be about 1/4 left) and beat until smooth. Dip a toothpick into the chocolate frosting, thoroughly coating it. Use the toothpick to swirl the chocolate into the vanilla frosting. 
A subtle swirled icing. More than enough to ice 12 cupcakes or a single layer cake.