Do you know how to solve a scrambled Rubik’s Cube? Regretfully, I don’t. I know its just a game but I used to get so frustrated when I could not solve it. I did have a little trick back in the day - I would simply peel off the coloured squares and reapply them where I need them. Yes, I know, that’s cheating, but I loved seeing all the colours line up again. I have to cake a Rubik’s Cube on How To Cake It (don't forget to subscribe!). This is one puzzle I can definitely solve!
Where Do I Get My Ingredients & Tools??
Trust me, when I'm working on a cake puzzle like this one, the last thing I want to do is worry about finding the right tools to put it all together. If some of the items in my recipe have you stumped, you can head over to my Parsel page, which organizes all of the ingredients and tools I use in a really easy, shoppable way!
For The Rubik’s Cube Cake!
Ingredients & Tools You Will Need:
4 x 8” square cake pans
2 x 8lb portion of my Vanilla Cake - find my recipe here
Wilton Lemon Yellow Icing Colour
Dividing Your Batter
Colour both batches of vanilla cake batter using Wilton Lemon Yellow Icing Colour. You want all four of your cakes to be the exact same colour. Therefore I suggest making both batches of batter and placing them in one large bowl. Now you can colour all of your batter at once to be sure all your cakes will be the same colour. Using your food scale, divide your yellow vanilla batter evenly between your four 8” square pans.
Constructing Your Cube Cakes!
Ingredients & Tools You Will Need:
1 x Italian meringue Buttercream - find my recipe here
Small offset spatula
Straight Icing spatula
1 x recipe Chocolate Ganache – find my recipe here
Wilton Black Icing Colour
Creating Your Black Ganache
I made my ganache overnight and let it set, since this is quite a large batch. Though my usual ganache ratio is 1:1, I added a 1/2 lb of extra chocolate to make the ganache a little stronger. I also wanted to make up for the fact that this ganache will be dyed black using a whole container of Wilton Black Icing Colour. Simply stir in you black colour while your ganache is still hot and watch to turn to black velvet before your eyes.
Cutting your Cake Cubes
Remove all four yellow vanilla cakes from their pans and level them. You can watch me do this HERE. Take one of those cakes, and cut it into 3 even cake layers.
Colour 1 cup of buttercream using the same Wilton Yellow you used to dye your vanilla cake batter. Try to match the buttercream to you cake layers now that they are in front of you. Spread a very thin layer of yellow buttercream on top of your three single layer 8” square cakes. Place one thin layer of cake, from the fourth cake that you cut, on top of each one of the buttercreamed layers. You should now have 3 cakes that are 8” square and 2” high. Measure them to make sure they are all of equal height.
Now for the math! Yikes! Cut all three of your cakes into three even strips measuring 2” wide. If your cakes were not quite 2” high, cut your strips to your cake height measurement. You should now have a total of nine cake strips that are 2” wide x 8” long x 2” high.
Time to trim a little off the length of each one of our cake strips. Cut all nine strips to measure 6” long. Again, if the height of your cakes is less than 2”, take your measurement and multiply it by 3. Now cut all nine of your cake strips to that length.
You passed your math lesson! Time to fill your Rubik’s Cube cake. Working with three cake strips at a time, spread your chocolate ganache along the side of two of your cake strips and sandwich all three cake strips together so that you have one layer of cake that measures 6” wide x 6” long x 2” high. Repeat this process with the remaining six cake strips, working with three at a time. Now it is time to stack these three cakes on top of each other with more black ganache. Make sure that as you stack your cake the cake strips are lined up in the same direction.
** Caking Tip: Here’s a little tip to help you remember which way your cake strips are facing. Push a ball head pin into your cake board marking where the cake grid pattern faces. You’re about to ice and cover this cake and you won’t be able to remember when it is one big, black cube cake!
Now you should have one large cake cube. Crumb coat it with more black ganache, chill it, and then ice it again. Take your time, cubes are tricky.
Covering your Rubik’s Cube Cake!
Ingredients & Tools You Will need:
4 lbs Satin Ice Black Fondant
¼ lb Satin Ice Red Fondant
¼ lb Satin Ice Green Fondant
1 lb Satin ice White Fondant
Wilton lemon Yellow Icing Colour
Wilton Orange Icing Colour
Wilton Royal Blue Icing Colour
Wilton Violet Icing Colour
2 ½” square cutter
A Rubik’s Cube!
I covered my cakes using what I usually refer to as the slab method - I guess I should think of a proper name... I roll my fondant into panels that are slightly bigger than the four sides and top surfaces of my Rubik’s Cube cake. I measure the height of my cube cake from all four sides. If your cube is slightly uneven - don’t fear! Just work with the tallest measurement and we’ll get to that later.
Cut four of the slabs of fondant to the height of your cube cake. Then I use a set square, which is the official name of the triangle ruler you used to use in math class, and a very sharp knife to cut a straight line from one of the perpendicular sides.
I cover my cake by applying panels of black fondant to two opposite sides of my cube, making sure to line up one of the straight cut edges along the bottom, and one along the perpendicular side.
I then use a ruler and the same sharp knife to trim the final uncut side of each fondant panel flush to my cake cube. Repeat this process and cover to the two remaining opposite sides of your cake cube.
I haven’t forgotten your dilemma! If your cake cube was not perfectly even on top, you may now notice that some of your black fondant panels are peeking up a little higher than your cake cube in some areas. Just take some more black ganache and fill in the space by icing your cake level.
Use your fifth and final black fondant panel to cover the top of your cube cake. Make sure to measure carefully and use your set square and ruler to help guide you.
This is a Rubik’s Cube!
So let’s make this cake look like one, shall we? Measure the side panels and top panel of your cube cake so that you can mark a grid on all five fondant panels. Using your ruler and sculpting tool, mark 2 horizontal lines, and 2 vertical lines at even intervals along all five panels of black fondant. You should now have a grid of nine squares marked out on all the surfaces of your cube cake. Doesn’t this remind you the cake grid we built earlier? Hmmm….
There are six colours on a Rubik’s Cube. I purchased my red, green and white fondant and dyed the other three colours myself. Weight out three portions of white fondant that are 1/4lb. Dye one portion yellow with Wilton Lemon Yellow, one portion orange with Wilton Orange and a little Wilton Lemon Yellow, and the final portion blue using Wilton Royal Blue and Violet icing colours. Keep your Rubik’s Cube close by for reference!
Roll out all six colours of your fondant:
Roll them as thinly as you can, and to the size of the square panels that make up your cake. Use a square cutter to cut nine squares out of each colour of your fondant. Wow! Nine seems to be the magic number today.
I ended up making my own template for my coloured fondant squares. I found that one I measured the size of the little squares that make up my grid, it was actually smaller then 2 ½” Plus, you must remember to leave a black border around each square of colour, so don’t measure your squares to their exact size. Leave about an 1/8” border all the way around.
To make a template, simply use your measurement to cut that size square out of a piece of cardboard, and round out the corners a little. I used an Xacto knife to cut along the edges of my cardboard template once placed on top of my fondant.
**Baking Hack: If you hack this recipe by making smaller fondant squares, and removing the black boarders, this Cube Cake could transform into the perfect Minecraft Cake! One of my most frequently suggested cakes. ;)
Arrange your squares onto your Rubik’s Cube Cake by attaching them with a little bit of water brushed on the back of each square. I chose to scramble my real life Rubik’s Cube model, and follow that pattern. You can cover your cake however you like. Either way, this cake has already been solved inside, and it will definitely solve your hunger!