Bob the Builder was my little boy's hero when he was 3. So naturally, his baker and cake decorator mom (that's me :) :)) made him a Bob the Builder cake for his 3rd birthday. Here is the cake:
There were no big secrets in decorating this cake. The cake itself was in the shape of Bob. I did not carve it out, instead I used Wilton special character cake pan which I rented from a local cake decorating shop here.
The cake pan came with a set of instructions on how to decorate it. Its fairly simple, made using the star piping method for the most part. The rest is just smooth icing and outline piping.
Bob the Builder licensed character cake pan and decorating instructions ( I rented mine for a local store and it came with an instructions card. If you plan on renting one, make sure the instructions card is included as it provides step by step instructions for frosting the cake. Otherwise, you can follow my steps here or drop me a note here if you need further help).
Wilton food coloring in black, copper, royal blue, lemon yellow, orange and brown (the instructions also come with a guide of how much buttercream you would need for each color).
Piping bags and Wilton decorating tips #16, #3 and #21
I used a rectangle cake board for the cake simply because I wanted some space around the cake to place the birthday message (the instruction card shows a cake board in the shape of the cake pan itself).
I used my butter icing instead ofbuttercream for the sides of the cake. My butter icing is of a much stiffer consistency and I prefer to work with it for shaped cakes as it is easier for me to achieve a smooth finish with this icing compared to the much softer butter cream.
Once the background was done, I then used buttercream to complete the rest of the decoration on the cake. I stood guided by the instructions card. I started off with an outline (with black buttercream using tip #3) followed by smooth icing for Bob's eyes using the same tip. The rest of Bob on the cake was completed using star tip #16.
Finally, for the border, I used tip #21 and piped shells in the same color as the sides of the cake.
I finished off the cake with the birthday message which I cut out from fondant using Wilton Alphabet cutters.
How to Make Shaped Cakes without Special Character Cake Pans
Some of you may be really interested in making this exact same Bob the Builder design but might be having problems in getting the cake pan. In fact, I think Wilton has also discontinued this cake pan so purchasing one might not be an easy option.
While it would be significantly easier to have the shaped cake pan, you can also make this cake without the pan.
Here is how you can do it:
Print out the image from the internet or trace it out from your child's favorite coloring book. You will probably have to adjust the image to the size you want it to be on the cake. Once you have the image in its final size, trace it onto parchment paper and cut it out following its outline.
Once the image is ready, place it on your cake and carve the cake to follow the outer shape of the image. Its best to give an extra allowance of 1 to 1.5 inches from the outline of your image.
After that, frost the sides of the cake where the image would not fall, and where you would be placing the image, coat it with a thin layer of icing (the icing will make it easier to trace the design pattern onto your cake).
Place the image on the frosted cake and trace the patterns (ie. the facial features, the clothes pattern, etc) into the cake using a sugarcraft knife. Lift the pattern once you are done with tracing all the lines on the image.
Now that you have all the lines marked on your cake, you can use your black buttercream icing to pipe the outlines, followed by star piping to cover the rest of the design.
This technique can be used to transfer any pattern or design onto a cake. In fact, I have used this technique for a number of cakes including this exact same Bob the Builder design. Unfortunately, I did not take a photo of the cake (for which I terribly regret now) and so I am unable to show it to you here. Here is another design where I have used a similar pattern transfer technique:
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