Easy Birthday Rainbow Cake – Layers of rainbow-inspired cake frosted with cream cheese frosting is easier to make than you think. It sure will put a big smile on anyone who sees it.
I started at 7 pm to bake 6 layers of cake. I was all pumped up ! not sure if it’s the lack-of-sleep or the pure excitement or both that supplied the rush, but yes..It was like kids in the candy store kinda high! I only have one 9-inch cake pan. Note to self: PLEASE GET YOURSELF TWO MORE PANS ! THAT WILL MAKE YOUR LIFE EASIER! okay, enough of shouting! I hardly bake and that’s why I refused to own 3 9-inch cake pans. Should I know, screw that ! I would own 3 pans okay! Sorry, I sound a bit annoyed, because I am! I told my husband only I could do this kind of thing to myself!!! and that’s how we ended up at midnight by the time I’m done with baking all 6 cakes!!! I know what you want to say “You deserve it. You did this to yourself. You didn’t want to buy 2 more pans”.
My two kids don’t really care for cake. They only like the icing! And all these troubles ?? That’s why being a parent is a difficult thing to explain. It’s like you will try to do anything in your human power to make your child safe and happy. Making this rainbow cake was exactly that. Fiorina is obsessed with rainbow (her piano teacher can attest to that!). She still loves the idea of having cake for birthday. So I asked her “What if mommy makes you something that has rainbow?” She literally ran in circle for 10 times and then gave me the biggest hug that would probably last me my lifetime! That’s why despite not wanting to have 3 cake pans, I still bake the freaking 6 layers of cake to make the rainbow happened.
I was so tempted to get store-bought cake mixes and just baked them, but I couldn’t let that happen. I just had to make it from scratch to check it off my list. Rainbow cake had been on my list for 3 years now and it’s about time to make it happened! It really does seem complicated to make, but I can tell you, it’s not. It’s time-consuming, but like I’ve said over and over….If I can make this rainbow cake, you can too !! Now..I’m getting a bit addicted to making birthday cake !!
Happy birthday to the sweetest girl I’ve known !!! I would do this all over again for my kids 🙂
Recipe is adapted from Divas can cook.
Easy Birthday Rainbow Cake
Food coloring (I use gel type)
- Red yellow, blue, green
- Orange: yellow + red
- Purple: red + blue
You can prepare the night before:
- Preheat your oven to 325 F (min is 330 F). Cream the sugar ,butter, and vanilla extract until it's creamy with your mixer. Use your baking pan to trace the round shape onto the parchment paper and cut it out. Make 6 of them. You will use this to line the bottom of the pan (to keep your sanity)
- Crack in the eggs, one at a time and stir to mix. Add in buttermilk, heavy whipping cream and continue to stir. Add in half of the flour and stir to mix. Add in the rest of the flour, baking powder, and salt. Stir to thoroughly mix them
- Get 6 medium size bowl and scoop about 1 Cup of the thick batter into each of the bowl. Drop in the food coloring on each bowl. Refer to the coloring instruction on the package. I like deeper color but not too deep, so I drop a bit more. Adjust it to your liking
- I hope you have more than one pan (don't be like me), if let's say you have 2 or 3 pans, line the bottom of each pan with the paper you cut out earlier. Pour each colored batter into each pan and use the rubber spatula to smooth it out so it covers the pan. Pop them into the oven. I'd say max 3 pans at a time. You don't want to crowd the oven too much. Bake for 10-15 minutes (mine needs almost 20 mins). So, monitor them. When you insert a toothpick into the middle of the cake and it comes out clean, the cake should be done too
- Remove from the oven and let them cool off in the pan for at least 5 minutes or until the pan is warm to touch. Run a knife towards the edge to loosen up the cake and you should be able to easily get the cake out with parchment paper. Gently place them on the cooling rack and you can gently peel off the parchment paper. This bottom side should be facing up when you stack the cake later. If your cake is "domed" shape, you can trim it off with a knife so it's flat. You can wrap the cake well with wrapper and store them in refrigerator until the next day. The cake should be cool when you frost them
Preparing the frosting:
- Cream together cream cheese and butter. Mix in powdered sugar and vanilla. I added a small amount of red food coloring to 1/2 of the frosting (because my daughter is obsessed with pink). So I can frost the sides with the pink
Frosting the cake:
- The order of the cake should start with purple, blue, green, orange, yellow, red. Dab a small amount of frosting in the middle of the cake stand, cake base, serving plate of whatever you use. So place the purple cake (bottom side facing up). Apply about 1/3 cup of frosting to this layer. Try to spread it out evenly to the edge with offset spatula. Place the blue layer and then repeat all the way until you get to the top layer, red.
- Now get ready to frost the side. Apply a thin layer of frosting all around the sides, we call this crumb coat. This is to seal off any loose crumbs. You will still see the cake, it's okay, we're not done yet. Place the whole cake inside the fridge for about 30 minutes. This will help to set the crumb coat. Remove from the refrigerator and then generously coat the rest of the cake, starting with the sides and then the top. Use your offset spatula or scraper to smooth out the frosting as evenly as you can. If you want to add any decoration to the cake, this is the time to do it. Place the cake back into the refrigerator to let the frosting set before you cut it. It will have a nice more defined layers