Rainbow Cupcakes

Recipe called for 12 cupcakes

Ingredients:
113g unsalted butter
180g sugar
4 egg whites
1 tsp vanilla extract
213g cake flour
2 tsp baking powder
175ml fresh milk

Directions:

1. Preheat oven at 180 deg. C.  Line white cupcake liner in cupcake pan
2. In a large mixing bowl or stand electric mixer, beat butter & sugar till light & fluffy.
3. Then beat in egg white a little at a time & mix well.
4. Turn the speed to low, add 3 parts of flour alternating with 2 parts milk plus vanilla extract.  Begin & end with flour.
5. Divide into 6 equal portions & add Wilton/Ameri gel coloring to 6 divided batter (red, orange, yellow, green, blue & violet)
6. First scoop 1 tsp of violet batter into cupcake liner; spread it evenly with the back of the teaspoon.
7. Bake for 2-3 mins (depend on your oven temperature) & taking it out & spreading 1 tsp of the blue batter on the slightly baked purple batter.  Repeat this steps for green, yellow, orange & red batter.
8. Once all the 6 rainbow batter are filled, continue to bake in the oven for 15-18 mins or until a cake tester comes out clean.