Mosaicake ~ Assembly

Mosaicupcakes Batter

It was so much fun making the Mosaicakes, and this is how I did it.

[everything but the colours are vegan in this recipe – the local Natural Food Store here was sold out of the vegan colours – I will have the proper vegan colours for next time – TIA! ]

Rainbow Cake – Mosaicake
¾ C vegan butter* (Whipped Earth Balance)
1½ C cane* sugar
egg replacer for 2 eggs
2 tsp vanilla* extract
1¼ C vanilla soy* milk
2½ tsp baking powder (aluminum free)
¼ tsp sea salt
2½ C unbleached flour*
colours [sadly, mine were not vegan – next time they will be! ♥]
* = Organic

∴ Preheat oven to 375°F/190°C/Gas mark 5. Mix dry ingredients (flour, salt, baking powder) together, then set aside. Beat butter until whipped. Add sugar and continue beating to mix. Add egg substitute, and blend well. Add the vanilla and soy milk, and blend well. Slowly add flour mixture, a little at a time, and beat until it’s all incorporated. Distribute batter evenly into as many bowls as you have colours you’d like to make. Combine colours well. Fill greased cake pan(s) about 2/3 full. Bake for 30-35 minutes, or until no longer wet when a toothpick is inserted. Too much browning will take away from the colours. Cool completely before icing. Enjoy!


1 C vegan butter* (Whipped Earth Balance)
6 – 8 C icing sugar
½ C vanilla soy* milk
2 tsp vanilla* extract
* = Organic

 ∴ Whip vegan butter until it’s all light and fluffy. Add vanilla, and continue beating. Alternate adding icing sugar and a little bit of soy milk until the mixture reaches a stable consistency – no longer slipping off a knife. Ice your cake/cupcakes. Enjoy!

Mosaicupcakes Baked

I got all my wet and dry ingredients ready. ♥

Mosaicupcakes Batter

After the batter was prepared, I split it all up between 6 dishes for each colour we’d chosen.

Mosaicupcakes Batter

Several dollops of colour later, and two cake pans, the Mosaicakes were ready for a 30-35 minute bake in the oven.

Mosaicupcakes Batter

Mosaicake 1 – the bottom layer.

Mosaicupcakes Batter

Mosaicake 2 – the top layer.

Mosaicupcakes Batter

After they’d cooled, the cakes came out of the pans easily.

Mosaicupcakes Batter

I sliced off the very top of the bottom layer to make a flat surface. (No crumbs were wasted! My Elflings were happy to help with the cake bits I’d cut off.) Once it was flat, I spread a layer of icing, then popped the top layer on.

Mosaicupcakes Batter

I started with the sides, then iced the top last. That way you can fill gaps or fix bits that need it. Now it’s ready to decorate! 

Mosaicupcakes Batter

At the last minute, I realized I didn’t have any piping bags (/facepalm), so I improvised with sandwich bags and my decorating tips. I will definitely be getting more piping bags at the next opportunity I have. Sandwich bags have a tendency to pop.

Mosaicupcakes Batter

Here you can see the mosaic of colour. 

For cupcakes, see Mosaicupcakes 


27 thoughts on “Mosaicake ~ Assembly

  1. meizac says:

    I will not tell you how many sandwich bags I’ve popped trying to pipe icing…and, yet, I still have no piping bags.

    The cake turned out beautifully. Hope the twinnigans had a fantastic day.


    • Veggiewitch says:

      In theory, it makes sense to work. In practice, I’m always like: “I so need to get proper piping bags!”
      Thank you so much, my friend. ♥
      They really did have an awesome day. =0)


  2. No Circ is Whole Son! says:

    This is awesome! What kind of food coloring did you use? Is that also organic? If I my child eats that store bought stuff, she gets the runs and they are a scary bright blue. A bit freakish! I cannot wait to make these into rainbow cupcakes!

    Do they make organic food coloring? Is it a brilliant enough color to be fun?


    • Veggiewitch says:

      Thank you, my friend. ♥
      Sadly, these colours are what I had left from my Wilton collection of cake/icing dyes from a purchase prior to adopting our organic vegan diet.
      I’d love to get the organic dyes for the next cake adventure. The Natural Food store here was out of stock. They go for $20 here, and last a while. ♥


  3. Rachel in Veganland says:

    Oh how I love this cake!! It tickles me right to the bone! I love the tones of the colors that you chose- what type of coloring did you use?


  4. iwishiwerevegan says:

    I’ve been dying to make vegan cake! My adventures into vegan baking haven’t been the most successful so far, so this looks promising. And extremely fun with all those colors!


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