Rainbow Cake with Cream Cheese Frosting

 Ingredients:
3 cup AP flour
4 tsp baking powder
180g butter
2 cup castor sugar
5 egg whites (Grade A)
2 tsp vanilla essence
1-1/2 cup fresh milk
Rainbow Color ~ Violet/Blue/Green/Yellow/Orange/Pink/Red

Directions:

1. Preheat oven to 170 deg C.  Line wax paper of 7" round pan.
2. Sift flour & baking powder together & set aside.
3. In a stand mixer, beat butter & sugar till light & fluffy.   Add egg white slowly & beat the batter till thicken.
4. Then add flour alternately with milk & ends with flour.   The last flour, use spatula & fold gently till the batter are well combined.
5. Divide the batter into 7 portions (300g ea) & each batter add few drops of food color.
6. Pour the batter in a lined round pan & bake for 15-20 mins or till cooked.

Cream Cheese Frosting:
125g cream cheese
125g butter
5 cups icing sugar
1 tbsp lemon juice
2 tsp fresh milk

Directions:

1. In an electric stand mixer, beat butter & cream cheese together with lemon juice on high speed for about 5 mins.  The mixture should be whipped buttery cream texture.
2. Add 1/3 of icing sugar into the cream cheese mixture & mix on low speed.   Gradually add 2/3 icing sugar while mixing.
3. Then add the milk & turn the speed to high & beat for another 5 mins.