Rainbow Cake
This rainbow cake recipe makes this 6 layer multi colored cake. This huge, impressive cake is a lot of fun to present, and to eat!

Ingredients
Cake
- 1 1/2 cups milk
- 3 cups all purpose flour
- 4 teaspoon baking powder
- 1/2 teaspoon salt
- 5 egg whites, room temperature
- 2 1/3 cups granulated sugar
- 1 cup butter, room temperature
- 2 teaspoons pure vanilla extract
- Cake layer food coloring gels (Purple, Blue, Green, Yellow, Orange and Red)
Frosting
- 4 cups confectioners’ sugar
- 1 1/2 cup butter, room temperature
- 1 1/2 teaspoons vanilla extract
- 2 - 3 Tablespoons whipping cream
- Optional; cake confetti candy
Directions
Cakes
- Preheat the oven to 350 degrees F.
- Grease and cut enough parchment paper to line six 9 inch cake pans.
- If you do not have 6 baking pans, you will have to work in batches with whatever number of pans you have.
- In a small saucepan, bring milk to a boil and then turn off and let cool to room temperature.
- Sift together the flour, baking powder and salt. Set aside.
- In a separate bowl, beat together your egg whites.
- Cream the sugar and butter, then add the egg whites a little at a time. Add the milk and vanilla and mix well.
- In sections, mix wet and dry ingredients together.
- Evenly divide the batter into 6 bowls and whisk food coloring into each one to create your rainbow.
- Pour into the pans and bake for 15 minutes each or until a cake tester inserted in the center comes out clean.
- Remove from oven, let cool for 5 minutes in the pan, then remove the cakes onto the wire racks, remove the parchment paper and let the cakes cool to room temperature.
- Continue the process until you have a six cakes baked, and cooled.
Frosting
- In a standing mixer fitted with a whisk, mix together sugar and butter. Mix on low speed until well blended and then
- Increase speed to medium and beat for another 3 minutes.
- Add vanilla and the cream in increments, and continue to beat on medium speed for 1 minute more. Add more cream if needed for good spreading consistency.
- Put some of the icing into a piping bag is you plan to pipe the trim around the outside of the top of the cake.
- Arrange cake on your cake serving plate in following order:
- Purple layer, frosting;
- Blue layer, frosting;
- Green layer, frosting;
- Yellow layer, frosting;
- Orange layer, frosting;
- Red layer, frost the top and sides.
- If the frosting is too soft, you may want to just put a thin layer of icing on the top and sides, then refrigerate the cake and frosting for a few minutes, then spread a 2nd layer around the outside of the cake once the frosting has firmed up a little.
- You may also want to put thepiping bag into the refrigerator for a few minutes to chill if the frosting is to runny before you pipe the garnish around the top outside edge of the cake.
- Garnish with colorful confetti candy.
- You will need to refrigerate the cake for several hours before cutting.
- Use a long sharp knife when you do slice the cake.