香蕉蛋糕 Banana Cake

 材料 Ingredients：

• 250g 牛油 250g butter
• 170g 糖 170g sugar
• 4粒蛋 4 eggs
• 4 ~ 5 条香蕉，捣烂 4~5 bananas, mashed
• 1 小匙香草精 1 tsp vanilla essence

粉料（筛过）Mixed Flour (sifted)：

• 270g 面粉 270g plain flour
• 1/2 小匙发粉 1/2 tsp baking powder
• 1/2 小匙苏打粉 1/2 tsp baking soda

做法 Directions：

1. 将一个8.5' x 8.5' x 3' 的四方烤盘涂上油，预热烤箱至170C。Grease a 8.5' x 8.5' x 3' baking tray and preheat oven to 170C.
2. 先将牛油和糖打至松白，蛋逐粒加入搅拌均匀。Beat butter and sugar until white and fluffy. Add egg one bye one and mix well.
3. 加入捣烂香蕉和香草精拌匀，最后加入粉料再拌匀即可。Add in mashed banana and vanilla essence, mix well. Fold in flour.
4. 将混合物倒入烤盘中，烤约50分钟至金黄便可。Pour mixture into baking tray and bake for 50 minutes.