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Rainbow Cake Recipe

Updated on October 26, 2012
Rainbow Cake
Rainbow Cake | Source
5 stars from 4 ratings of RAINBOW CAKE

I saw a picture of this cake one time that was layered with lots of different colors. I thought to myself "how cool would it be to make a rainbow cake." It couldn't be that hard right? Well, I learned that it really isn't that hard! The hardest part is mixing the cake batter with the food coloring just right to get the good deep colors. But even that part was FUN!

So the colors of the rainbow are basically Red, Orange, Yellow, Green, Blue and Purple. In that order. I had no idea of what the colors were and learned that there are other colors too but these are the ones I used in my cake. The "main" colors in my opinion. Red at the top of the arch and Purple at the bottom.

Cook Time

  • Prep time: 20 min
  • Cook time: 30 min
  • Ready in: 50 min
  • Yields: 1 13X9 inch Cake
Ingredients
Ingredients | Source
Separating the egg whites
Separating the egg whites | Source
Everything in the mixing bowl ready to be mixed.
Everything in the mixing bowl ready to be mixed. | Source

Ingredients for the cake

  • 1 Box Moist Supreme Cake Mix, Classic White
  • 1 1/4 Cup Water
  • 1/3 Cup Vegetable Oil
  • 4 Egg, Whites Only

Instructions

  1. Preheat your oven to 350 degrees
  2. Blend cake mix, water, oil and eggs in a large bowl until moistened.
  3. Beat with a mixer on medium speed for 2 minutes until all lumps are gone.
  4. Separate cake batter into six small bowls.
  5. Use the colors of the rainbow to color each different bowl with food coloring. Red, Orange, Yellow, Green, Blue and Purple.
  6. Prepare your pan to keep cake crom sticking by lightly coating the bottom of the pan with shortening and a flour or sugar dusting.
  7. Starting with the red cake batter color, spread along the bottom of the pan.
  8. Orange will go next and go right on top of the red. Pour it on evenly and use a spoon or spatula to spread out to the edges of the red. Be careful not to push too deep or you will mix the colors.
  9. Do the same with the Yellow, Green, Blue and Purple batters ending with purple on the top.
  10. Place in the oven and bake for 30 minutes. When toothpick inserted in the center comes out clean, your cake is done.
  11. Cool the cake for 10 - 15 minutes before removing from the pan.
  12. To remove from the pan, place upside down on a cooling rack and the cake should just fall out.
Click thumbnail to view full-size
Cake batter separated and ready to be mixedMixing the food coloring with the cake batterAll the cake batter is mixed with the correct food coloring.Starting with Red on the bottom, then Orange and yellowAlong with green, blue and finishing with purple.In the oven ready to be baked.Taking the cake out of the pan, turned upside down on a cooling rack.The cake is done!
Cake batter separated and ready to be mixed
Cake batter separated and ready to be mixed | Source
Source
Mixing the food coloring with the cake batter
Mixing the food coloring with the cake batter | Source
All the cake batter is mixed with the correct food coloring.
All the cake batter is mixed with the correct food coloring. | Source
Starting with Red on the bottom, then Orange and yellow
Starting with Red on the bottom, then Orange and yellow | Source
Along with green, blue and finishing with purple.
Along with green, blue and finishing with purple. | Source
In the oven ready to be baked.
In the oven ready to be baked. | Source
Taking the cake out of the pan, turned upside down on a cooling rack.
Taking the cake out of the pan, turned upside down on a cooling rack. | Source
The cake is done!
The cake is done! | Source

Things I learned

  • When mixing the food coloring with the cake batter you have to use a lot of drops of the red and blue to get the deep colors.
  • To get an orange use 17 drops of yellow food coloring and 3 drops of red. It turned into the perfect orange for my rainbow cake.
  • I actually bought the NEON food coloring pack that came with a purple so I didn't have to make purple. This was a lot easier!
  • I used more cake batter for the red (bottom layer) of the cake because I wanted it to reach to all corners. If the other colors didn't reach the corners it was ok because the red would be there.
  • When spreading the layers, don't press too hard and don't panic if the colors don't go all the way to the edges. It doesn't have to be perfect and when it cooks it will flatten out a bit.
  • Make sure you cool the cake before you try to get it out of the pan. Because of how the cake cooks it will not be flat on the top so if you take the cake out of the pan before it is cooled it will crack down the center of the cake.

Nutrition Facts
Serving size: 1/10 package, 10 serving per cake
Calories 250
Calories from Fat36
% Daily Value *
Fat 4 g6%
Saturated fat 2 g10%
Unsaturated fat 0 g
Carbohydrates 33 g11%
Sugar 18 g
Fiber 1 g4%
Protein 1 g2%
Cholesterol 0 mg
* The Percent Daily Values are based on a 2,000 calorie diet, so your values may change depending on your calorie needs. The values here may not be 100% accurate because the recipes have not been professionally evaluated nor have they been evaluated by the U.S. FDA.

Because I forgot to buy frosting at the store (opps) we made our own homemade frosting. We did a cream cheese frosting that turned out quite nicely for this cake. Here's the ingredients and how we did the frosting.

The frosting all made up and ready to go on the cake.
The frosting all made up and ready to go on the cake. | Source

Ingredients for the frosting

  • 1 Stick of Butter, softened
  • 1 package of Cream Cheese
  • 2 1/2 cups Powdered Sugar
  • 1 Tablespoon Vanilla

Instructions

  1. Soften the butter in the microwave (if it's not already soft).
  2. Mix together the butter and cream cheese in a deep mixing bowl.
  3. Add the vanilla.
  4. Add powdered sugar a little cup at a time.
  5. Mix until creamy.
  6. Spread on the top and sides of the cake.

Things I learned

  • Use a deep bowl when mixing or the powdered sugar will get everywhere (opps)
  • It might be easier to start with the cream cheese at room temperture so it mixes better with the butter to start.
  • When spreading the frosting on the cake, use big "globs" and it is easier to spread. Also helps so the cake doesn't show through the frosting.

Decorating the cake

For the decoration on our Rainbow Cake we used Gel Frosting. We didn't have every color of the rainbow but we used what we had and I love how it turned out. All you do is make circles on the cake with the gel. Use all colors to start. Make sure the circles are thick in color or you do two or three circles of each color. Then using a knife or small spatula you start in the middle of the cake and drag slowly and softly to the edge of your cake. You have to clean off your knife every time so you don't mix the colors. Do this all the way around the cake.

Click thumbnail to view full-size
Put circles of the gel all around the cake and used a spatula to spread the colors into each other.The finished decorating part of the cake
Put circles of the gel all around the cake and used a spatula to spread the colors into each other.
Put circles of the gel all around the cake and used a spatula to spread the colors into each other. | Source
The finished decorating part of the cake
The finished decorating part of the cake | Source

This Rainbow Cake was quite easy to make. I always figured the colors would mix or they wouldn't bake like they were supposed to. I didn't think the frosting was going to turn out right and decorating would make it look horrible but it turned out AWESOME! See for yourself. . . . . .

Click thumbnail to view full-size
Red, Orange, Yellow, Green, Blue, Purple, a perfect rainbow!The finished cake, minus what my kids have eaten.
Red, Orange, Yellow, Green, Blue, Purple, a perfect rainbow!
Red, Orange, Yellow, Green, Blue, Purple, a perfect rainbow! | Source
The finished cake, minus what my kids have eaten.
The finished cake, minus what my kids have eaten. | Source

Comments

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    • CassyLu1981 profile image
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      CassyLu1981 5 years ago from Spring Lake, NC

      Om - I think I enjoyed it more then the kids LOL Thanks for the votes and comment :)

    • Om Paramapoonya profile image

      Om Paramapoonya 5 years ago

      How cute! Kids would love this. Well, adults probably would, too. Who doesn't like beautiful food? Rated way up!

    • CassyLu1981 profile image
      Author

      CassyLu1981 5 years ago from Spring Lake, NC

      Emma - Thanks for the votes, comment and everything else :) You rock!!!

    • CassyLu1981 profile image
      Author

      CassyLu1981 5 years ago from Spring Lake, NC

      teaches12345 - :) It's a lot of fun to make! Enjoy! thanks for the comment :)

    • Emma Harvey profile image

      Emma Harvey 5 years ago from Berkshire, UK

      This looks so cool! Got to rate, vote and pin! Awesome :)

    • teaches12345 profile image

      Dianna Mendez 5 years ago

      Very pretty! I love rainbows and I am going to have to make this one soon.

    • CassyLu1981 profile image
      Author

      CassyLu1981 5 years ago from Spring Lake, NC

      idigwebsites - I was lucky enough to have little colored bowls from IKEA that matched (all but the purple LOL). I love the "edible art" saying, it's so true :) Thanks for the comment!

    • idigwebsites profile image

      idigwebsites 5 years ago from United States

      I love those illustrative photos... I like the colors! What a great piece of "edible art". Thanks for sharing your recipe. :D

    • CassyLu1981 profile image
      Author

      CassyLu1981 5 years ago from Spring Lake, NC

      rfmoran - thanks :) taking the pics was part of the fun!!!

    • rfmoran profile image

      Russ Moran 5 years ago from Long Island, New York

      Excellent use of photos to explain the recipe.

    • CassyLu1981 profile image
      Author

      CassyLu1981 5 years ago from Spring Lake, NC

      Millionaire Tips - I wasn't sure how the frosting would turn out but I do like it :) It's beautiful and tastes great :) Thanks for the votes and comment!

    • Millionaire Tips profile image

      Shasta Matova 5 years ago from USA

      That did turn out beautifully, and the rainbow frosting adds a nice touch. Voted up.

    • CassyLu1981 profile image
      Author

      CassyLu1981 5 years ago from Spring Lake, NC

      ishwaryaa22 - Setting the colors in the pan was the hardest part but once I got the hang of it and knew how it needed to be done it was easy enough :) Thanks for the 5 stars, votes, pins, shares and comment :) It's all appreciated!

    • CassyLu1981 profile image
      Author

      CassyLu1981 5 years ago from Spring Lake, NC

      Mhatter99 - You are welcome :) Thanks for the comment!

    • CassyLu1981 profile image
      Author

      CassyLu1981 5 years ago from Spring Lake, NC

      always exploring - I hope you do make one, enjoy :)

    • ishwaryaa22 profile image

      Ishwaryaa Dhandapani 5 years ago from Chennai, India

      Wow! This is indeed a unique & delicious dessert recipe! Your hardwork in setting the colors carefully in this cake has paid off! The end result is really wonderful! Your instructions & photos are helpful. The last 2 photos looked drool-worthy! Rated your recipe 5 stars! Well-done!

      Thanks for SHARING. Useful & Awesome. Voted up, pinned & shared socially

    • Mhatter99 profile image

      Martin Kloess 5 years ago from San Francisco

      Thank you for sharing this great idea

    • always exploring profile image

      Ruby Jean Fuller 5 years ago from Southern Illinois

      OMG, This is so beautiful and qnique. I want to make one..Thank you.

    • CassyLu1981 profile image
      Author

      CassyLu1981 5 years ago from Spring Lake, NC

      leahlefler - I know your boys would love it :) It's also a great cake to make for those days you wish it was sunny and warm or you just need a mood lift :) Thanks for the comment!!!

    • leahlefler profile image

      Leah Lefler 5 years ago from Western New York

      This is so cute, CassyLu! I definitely am trying this one with my boys - they would LOVE it! This would be a perfect cake for St. Patrick's Day - or for a spring party!

    • CassyLu1981 profile image
      Author

      CassyLu1981 5 years ago from Spring Lake, NC

      Sharkye11 - A swirl cake huh? I might have to try that one next! Thanks for the idea :) Thanks for the comment too :)

    • Sharkye11 profile image

      Jayme Kinsey 5 years ago from Oklahoma

      That is so pretty! I've seen swirl cakes before but never a fully layered rainbow cake. Love how you did the frosting too.

    • CassyLu1981 profile image
      Author

      CassyLu1981 5 years ago from Spring Lake, NC

      North Wind - I sure hope your little girl enjoys it!!! My kids loved mixing the colors and seeing it all put together :) Thanks for the comment!

    • CassyLu1981 profile image
      Author

      CassyLu1981 5 years ago from Spring Lake, NC

      lindacee - I saw the picture online and figured it couldn't be too hard. I wish I would have had the tips though LOL but it was a blast to make. Thanks for the comment and all the votes!

    • North Wind profile image

      North Wind 5 years ago from The World (for now)

      This is a great cake for a little girl's birthday. Actually, I can't see any child not liking it. Love the frosting and all of the colors!

    • lindacee profile image

      lindacee 5 years ago from Arizona

      What a fun idea for a special occasion cake! Thanks for sharing your hints and tips -- it is always nice to learn from another's experience when tackling a new recipe! Voted up, useful and awesome!

    • CassyLu1981 profile image
      Author

      CassyLu1981 5 years ago from Spring Lake, NC

      TToombso8 - So glad you like it :) Thanks for the votes, shares and comment!

    • TToombs08 profile image

      Terrye Toombs 5 years ago from Somewhere between Heaven and Hell without a road map.

      This is awesome, Cassylu! Voted up and shared!