Saturday, January 8, 2011

Rainbow Cake

This is not an original idea. I've seen at least 4 rainbow cakes out in the blogosphere, and even some rainbow cupcakes. But what I discovered in my attempt was that it's actually quite easy to have this cake come out beautifully and exactly like you wanted. Other cakes? Not always.

The cake recipe you use is not really important. I used this one. I wish there had been a little more batter, actually, then I might have had enough to do the purple layer.

2 sticks butter, room temp
2 1/3 c sugar
5 egg whites, room temp
2 teaspoons vanilla
3 c cake flour
4 tsp baking powder
½ tsp salt
1 1/2 c milk or almond milk
Red, orange, yellow, green, blue (and purple) food coloring*
buttercream frosting
1 cup coconut

* I suggest using gel food coloring for all colors but the yellow and green; regular grocery store food coloring works fine for yellow and green. Gel food coloring is much more dramatic and vibrant, and the red, orange, blue (and purple) need to be vibrant.

1) Oil and line how ever many 9” cake pans you have. (Guess how many I had? None. I had one 10" springform cheesecake pan. Guess how many hours it took to make this cake? Six. In hindsight, it would have been more efficient to drive to the store and buy cake pans.)

2) Sift together the flour, baking powder and salt. Set aside.

3) Cream the sugar and butter, then add the egg whites. Add the vanilla and mix until fully incorporated. Then, alternating between wet and dry, add the milk and flour mixture.

4) Preheat oven to 350. Divide the batter amongst 5 or 6 bowls.

5) Mixing each bowl individually, add small amounts of food coloring until the desired shade is reached. The bowl you dye red will need a lot of dye; orange, yellow, and green, not very much. I was surprised by how little blue was needed to create that dramatic sky blue. A little gel dye goes a long way!

6) Pour into the pans and bake for 15 minutes each. Now is a good time to start preparing your buttercream frosting.

7) Now the fun begins! After each cake has cooled for a few minutes, turn out onto parchment paper.
 8) Layer and frost your cake in rainbow order.

 I put a small layer of lemon curd on top of the yellow layer for extra flavor. Yum!
 9) Crumb coat the cake.
10) Add coconut and any other decorations
 11) Chill until serving.

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