Walnut Sponge Vanilla Cake with Chocolate Diamonds
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Walnut Sponge Vanilla Cake with Chocolate Diamonds

  Usually this cake is made into bars, walnut based cake is baked in a sheet pan, cooled and then buttercream is spread on the top followed with  a thin layer of melted chocolate. Once chocolate hardens, cake is then carefully cut with hot knife into small bars. I wanted a little change and so…