Frugal Foodie Mama: Rainbow Bundt Cake & Rainbow Layered Smash Cake

Monday, February 18, 2013

Rainbow Bundt Cake & Rainbow Layered Smash Cake

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My sweet baby girl turned one this month.  I still can hardly believe this first year with her has already come and gone.  

For her first birthday party, we decided to go all out rainbow.  My main inspiration for her first birthday party came from a term that is used with great hope and love in the infertility community... rainbow baby. 
A rainbow baby is the first baby you are able to give birth to, to hold after the loss of a previous pregnancy or little one.  
Baby girl is our rainbow baby after two previous consecutive miscarriages.  
The rainbow birthday party theme was just destined. :)

When I first started looking for inspiration for her party, I stumbled upon the blog Wine & Glue.  I have had a bloggy "love" affair with Lisa and her blog ever since. ;)  She was definitely the inspiration behind baby girl's smash cake with her Rainbow Heart Cakes, although I went a slightly different route with how I created mine.  (Plus, I think her's are so much more brightly colored and pretty than mine so you should click over & check out her post too. ;) )

For baby girl's party, I created a rainbow bundt cake, a heart shaped layered smash cake, and also baked extra rainbow swirled cupcakes when I realized my guest count was a *a little* higher than I had originally anticipated.  The bundt cake will serve about 12-15.  I made about 18 cupcakes as well. If you plan to make cupcakes, just pick up another box of cake mix & double the recipe. But if you are having a smaller party, the bundt cake should be sufficient. 

What you will need:
1 box of your favorite vanilla cake mix
3 eggs
1 1/4 cups water
1/2 cup canola oil
1/2 cup sour cream
various food coloring (I would suggest gel food colorings if you have them.  The liquids can get kind of messy with a project of this undertaking.)

Preheat your oven to 350 degrees.

In a large bowl, mix together the cake mix, eggs, water, oil, and sour cream.  Divide the batter into 6 different bowls- putting the most batter in the first one and then progressively putting less in each bowl as you divvy it out.  
Now color each of your bowls of batter with your food coloring.  I did yellow, orange, red, purple, green, and blue.  I added a few drops at a time until I had the color that I was going for.  
Be sure to grease and flour your bundt cake pan and your heart shaped pans.

Before you start the bundt cake, pour your batter into a heart shaped baking pan (similar to the one I have pictured below). I just did four layers for her smash cake. This is probably the perfect time to look for heart shaped pans since many of them will be included with the Valentine's Day clearance sales. ;) 

After you have your smash cake layers poured, start with the layering of your batter for the bundt cake.  I started with my red since it was the batter I had the most of and poured it into the bottom.  Then I layered all the other colors in.  I do suggest that you make sure you pour each of the colors of batter from the outside in so that the rainbow layers also show up on the outside of the cake.
I found a lot of helpful tips for layering the rainbow bundt cake batter from this post on Shane's Killer Cupcakes.

You will bake the bundt cake for about 35-40 minutes.  After 30 minutes or so, check the cake with a toothpick.  When the toothpick comes out clean, it is done.  The heart shaped cakes took about 20 minutes to bake.

Let the cakes cool for about 10 minutes in the pans, and then turn them out on wire racks to cool completely before frosting.  If the cakes won't come out very easily at first, just work a butter knife along the outer edges of the cakes & then try turning them out again.

I had an idea in my head that I wanted the frosting on the bundt cake to just run along the bottom so that it would look like clouds at the end of the "rainbow" when you cut into the cake.  I needed a buttercream that was fluffy, but that was stiff enough to not slide down.  I remembered seeing a recipe for a Marshmallow Buttercream on Shaken Together that she had used on Rocky Road cupcakes, and I knew it would be perfect!

What you will need:
2 sticks of butter, room temperature
One 17 oz jar of marshmallow fluff (I actually used two 7 oz jars because that is what I had on hand, & it worked perfectly.)
1 cup powdered sugar
1 tsp vanilla

Just cream the butter and sugar together.  Then hand stir in the marshmallow fluff and vanilla. 
I simply used a pastry bag & decorative frosting tip and piped the buttercream in 2 thick layers, one right on top of the other all along the bottom of the bundt cake.  I then carefully tossed on rainbow sprinkles all around on the "clouds".  
For the rainbow smash cake, I used the same frosting tip and simply piped heart shaped dollops of buttercream between each heart shaped cake layer, and then put a pretty dollop on top with a dash of rainbow sprinkles.

If you opted to make cupcakes in addition to the bundt cake and smash cake, this frosting recipe is almost enough for all of them.  I actually had 3 cupcakes that were not frosted because I ran out of the buttercream.  But they were not actually needed for the party, so no biggie.

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I couldn't wait to cut into the rainbow bundt cake to see how it looked on the inside!  It turned out beautifully even if they colors were not perfectly rainbow layered.

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The smash cake was also a huge success.  Well, with everyone but baby girl. ;)  She really wasn't sure exactly what to do with it, I think...

Be looking for the next colorful party post on the blog soon.  Here is a little hint...
It just may go hand in hand with birthday cake.  ;)