Galaxy Ganache Cake

I was tasked to make another galaxy themed cake, but had already made a galaxy mirror glaze cake! After a bit of thought, I decided to make some galaxy colored cake layers, cover the cake in a gothic black ganache. This cake design is inspired by Sweetapolita!  I also added some of my favorite sprinkles from Neon Yolk Shop and Fancy Sprinkles. The recipes used can be found below:

My Favorite Vanilla Layer Cake Recipe

Chocolate Ganache Filling

I made four, seven inch cake layers, which I colored two shades of blue, and two shades of purple.

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I then covered the cake with room temperature dark chocolate ganache, which I colored black with gel food coloring.  I’ve found that dark chocolate ganache is MUCH easier to color a true black than frosting. You can use the same techniques to smooth ganache that are used to smooth buttercream!

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I added a sprinkles around the base, and piped on some ganache drops using a piping bag.

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And that’s it! No fancy tips, no additional components, just a lot of ganache, and some colorful cake layers 🙂

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I work in finance during day, and like to think of myself as a baker by night! Follow me here at, on instagram @chelsweets, and on YouTube ( ) to see my creations :D

10 thoughts on “Galaxy Ganache Cake

  1. What a great idea! Those sprinkles look so vibrant against the black ganache. Well done! I have watched some youtube clips of yours where you mention that you freeze your cakes after baking. Could you please share how you freeze them? I am wanting to make my daughters first birthday cake next month and will need to do the cakes a day or two in advance.

      1. The americolor gel colors that you use; is there any place where I can buy these as singles? This cake is gorgeous and would love to use the colors you have used in this.

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