Preheat oven to 325 degrees. ... mixture. Finely chop white chocolate in processor. Add chocolate ... topping onto cooled cake. Refrigerate about 6 hours. ... and walnuts on top before serving.
Position racks in center and ... sour cream, egg whites, egg, flour and vanilla. ... chocolate batter on top, swirl. Repeat. Bake 1 ... oven off. Let cake stand in oven for 1 ... remove side of pan.
While the cake is being prepared, combine the ... golden brown on top. After cake is finished, ... Refrigerate for about an hour before serving. Enjoy! .