DIY Galaxy Mirror Cakes Let You See Yourself In Space

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Rosanna Pansino / YouTube

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Galaxy anything makes me happy. Cake makes me happy. Shiny things make me happy. So when I saw a shiny galaxy mirror cake, I nearly screamed from excitement.

This project takes a bit of time, but it’s not too hard to accomplish and looks so cool once you’re done. I’m really glad I decided to give it a try. It was so pretty, I almost didn’t want to eat it (but I did, of course)!

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If you wanna make it as much as I did but have no idea how to do it, have no fear, because this was me before I watched the video tutorial.

Now I do know what I’m doing, so here’s how you do it.

THE INGREDIENTS YOU WILL NEED:

  • (2) 6” Round Cakes
  • 8 Ounces White Chocolate
  • 1 Cup Sugar
  • 1/2 Cup Cold Water
  • 1/4 Cup Water
  • 1/2 Cup Light Corn Syrup
  • 1/2 Cup Sweetened Condensed Milk
  • 5 Teaspoons Powdered Flavorless Gelatin
  • 1 Container Vanilla Buttercream Frosting
  • 1 Container Black Food Coloring
  • 1 Container White Food Coloring
  • 1 Container Navy Blue Food Coloring
  • 1 Container Electric Blue Food Coloring
  • 1 Container Purple Food Coloring
  • 1 Container Pink Food Coloring
  • 1 Container Black Disco Dust

THE TOOLS YOU WILL NEED:

  • Anything Needed To Bake The Cakes Of Your Choice
  • Cake Leveler
  • Candy Thermometer
  • Saucepan
  • Whisk
  • Strainer
  • Frosting Spatula
  • Piping Bag (w/ optional tip)
  • Multiple Bowls For Separate Glaze Colors (2 bigger, 4 small, 1 XL)
  • Immersion Blender
  • Vase/Cup Or Something To Place The Cake On
  • Spoons
  • Parchment Paper
  • Baking Sheet
  • Paint Brush

First, bake, level, and frost your cakes. Leave the frosted cakes to chill in the fridge until set completely.

While that’s setting, you can make your mirror glaze. Pour all of your gelatin into 1/2 cup of cold water. Stir together until it looks like applesauce. Set if off for about 5-10 minutes to bloom.

In a medium saucepan, add 1/4 cup of water, light corn syrup, and sugar. Then whisk together these ingredients until well combined. Turn heat to medium low and cook for 7-8 minutes.

Add bloomed gelatin and whisk. Add condensed milk and whisk one more time. Pour mixture over white chocolate and let sit for a few minutes until chocolate melts. Use immersion blender to mix.

Strain mixture into largest sized bowl. Separate into other bowls and put coloring of choice into each one.

Place parchment paper on baking sheet, cup/vase on the center, and cake on top. Now comes the fun part– it’s time to pour!

Use candy thermometer to make sure the glaze is about 90 degrees F before you pour for best results.

Take your two main colors and pour one into the other, swirling gently. Pour over the cake. Let that drip. Then drizzle or pour on additional colors however you’d like.

In the tutorial below, Rosanna uses a paint brush to splatter on disco dust and white food coloring to simulate stars.

Once it’s all dripped off, you can place it on a serving tray or platter and pipe buttercream around the sides if you’d like.

That’s it, you’re done!

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Delicious and gorgeous? What more could you want?

What colors are you going to make your mirror cake?

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