Simple Sprinkle Covered Rainbow Cake

We’re hoping today’s post will brighten up your day! What better way to do that then with a little cake and a little rainbows. By little we really do mean little, how cute is this six serving Sprinkle Rainbow Cake covered in our favorite sprinkle mix, Unicorn Cake? Unicorn sprinkles and cake, was there ever a better match?

Unicorn sprinkle covered cake on white cake stand and candles in background

Often when we are baking we will have extra batter. This may be a result of needing an odd number of cupcakes, a larger cake, and so on. We always pop it in a small 6 inch cake pan and bake an extra cake for later. I mean have you ever really had the problem of having too much cake? Does that problem really even exist?! Don’t worry about having to eat the cake right away either. The extra one can always be wrapped in plastic and frozen for up to six months. Six inch cakes will feed about six people. Which makes them the perfect size to even freeze and pull out after dinner or when guest show up.

No time to bake or run to the store? Done. Forgot a special somebody’s birthday, boom, rainbow cake to the rescue. So easy and fast you’ll be baking them ahead because you love the saved time!

Top of spinkle rainbow cake with napkin and sprinkles underneath

Of course your going to need an easy way to decorate and frost it. For this, we used leftover buttercream frosting (this recipe here) and after chilling the cake for about 10 minutes we covered the sides in sprinkles, piped on an easy border, and added more sprinkles. Speaking of sprinkles, these are one of our customers favorite sprinkles mixes, Unicorn Cake. And with all those gorgeous color it’s easy to see why! These sprinkles would be so fun for a rainbow party as well!

Unicorn Sprinkles on cake with candles

Of course a few birthday candles never hurt a cute little rainbow cake either!

Want to see more recipe inspiration like this Rainbow Cake? Check out our Recipe Share section.


Check out our Sprinkles post for more info about our Sweet Sprinkles!

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