云石巧克力芝士蛋糕 Marbled Chocolate Cheese Cake

 材料A  Ingredient A：

• 180g牛油  180g butter
• 20g可可粉，过筛  20g cocoa powder, sifted
• 180g-200g幼糖  180g-200g castor sugar
• 3粒鸡蛋  3 eggs
• 120g自发面粉，过筛  120g self-raising flour, sifted

材料B  Ingredient B：

• 250g奶油芝士  250g cream cheese
• 60g幼糖  60g castor sugar
• 1小匙云尼拉  1 teaspoon vanilla essence
• 1粒鸡蛋  1 eggs
• 1/2杯水  1/2 cup water

做法  Directions：

1. A：将牛油煮溶加入可可粉搅拌均匀，待稍冷，加入幼糖打匀，逐粒加入蛋打匀，最后加入面粉搅匀。倒入一已抹油及铺上纸之20cm方形烘盘中用170C之火度烘约15分钟（50%半生熟）。
   A: Melt butter in a saucepan, add cocoa powder and mix well. Cool slightly and beat in castor sugar. Beat in eggs one at a time. Lastly, mix in flour. Pour into a greased and lined 20cm square tin. Bake at 170C for about 15 minutes.  
2. B：将全部材料搅匀。倒入A料上用小刀拉成云石形，放入烘炉内继续烘至金黄色（约25分钟）。取出待冷，便可切片供食。
   B: Mix all the ingredients together and beat well. Pour over A and swirl through with a small knife for marbled effect. Return to oven and continue to bake til golden brown (about 25 minutes). Remove and leave to cool. Slice and serve.

注：如蛋糕烘的太熟才加入B料，云石效果没那么美。
NOTE: The marble effect will not be nice if the cake is over cooked before pouring in B mixture.