
Rainbow cakes seem to be all the rage on food blogs lately, which means I've been coming across them (to my delight) about once a week.
I'm horribly and wonderfully addicted to food blogs.
Anyway, when faced with the prospect of bringing a treat to Big One's preschool circus party I could think of nothing better!
My initial thought was to make a cotton candy cake, but in the end I went with my tried-and-true yellow cake recipe and added some cotton candy to a regular buttercream.


The director of the school actually called me to tell me how delighted they were with the cake, which left me giggly for days.
Awesome Yellow CakeCake Ingredients
1 cup shortening or butter (both work equally well)
2 cups white sugar
5 eggs
2 teaspoons vanilla extract
2.75 cups all-purpose flour
3 teaspoons baking powder
1 teaspoon salt
1.75 cups milk
1 box instant vanilla pudding
1. Preheat the oven to 350 degrees and prepare your pan or pans. I work with four round 9" pans, which makes it a lot easier to throw together cakes with several layers.
2. Stir together the "good stuff," as I always remembered of it as a kid: butter and sugar, followed by eggs, dry pudding mix, and vanilla.
3. Combine the rest of the ingredients. While a separate bowl is generally recommended, I find that measuring out the flour in a large measuring cup and then adding salt/baking powder and giving it a quick stir just the trick just fine.
4. Alternate mixing in the dry goods and the milk until everything is thoroughly combined.
At this point you could bake it at will: 45 minutes for one 9x13 sheet, or 15-20 minutes for a few round layers. But then you wouldn't have a clown cake - just a very yummy yellow cake.
5. To make the layers I separate the batter into six separate bowls, each with approximately 3/4 c. Then I added food colorings at will. This part is totally up to the baker. I wanted to go with primary colors but was stuck with a "neon" box of food coloring, so I had to adapt a bit. Plus, I added a black layer because, well, I'm Mme. Monster.

6. Each color went in its own pan, and I baked four at once and then the final two layers. Small layers like this are usually done in 15-18 minutes, but be sure to check with a toothpick or thin knife.
7. Let the cakes cool for about ten minutes in the pan before turning them out onto a wire rack. I used to have a terrible time getting my layers out in one piece before I realized that the bottoms of the cakes weren't cooling on the still-warm stovetop. To fix this I started cooling the
pans on wire racks before dumping the cakes over, and voila! Solid layers!
Icing2/3 c. soft butter
4 cups powered sugar
2 Tbsp. (or more) milk
1 tsp. vanilla
1 package cotton candy and milk (1-2 Tbsp) to dissolve
Have you ever purposefully dissolved cotton candy? It's kind of fun and kind of gross. And it turns a very unappetizing shade of green.

1. Dissolve cotton candy, using just enough milk to liquify the whole mess.
2. Combine all ingredients with an electric mixer (trust me, it's just easier).
3. Separate into bowls and color as desired.
I went with five colors: green, blue, orange, pink/red, and purple.
AssemblyI am really glad I took assembly pictures of this cake, because it helps drive home just how colorful it all was.

Once the layers are assembled you can frost the exterior of the cake. And, if you're like me, you'll run out of the primary color you intended to use.
In my head, this was going to be a bright green cake with homemade dot candy in black and white all over the surface. However, it ended up a kind of tie dye nightmare which ultimately looked like it belonged in a preschool classroom.

White sprinkles went around the sides of the cake, and I dropped homemade dot candy (royal icing, really) directly on top.

I wish now that I had done more dot candy colors, but I had never tried it before. I also wish my top layer had baked flat, but that doesn't always happen around the lab.