How to make a Lego Birthday cake

Beau is really into Lego. I mean REALLY into it. It’s all she want’s to do first thing in the morning. We bought her Olivia’s House for her birthday a couple of weeks ago and she has been dressed and ready for school by 7am every morning so she can play with it until it’s time to leave.

She’s always liked the regular ‘old school’ stuff that Tim used to play with when he was kid, but since the prettyLEGO Friends  girly Lego came out she has a new-found love. What was a collection of red, white, brown and black bricks has now been added to with pinks, lilacs, purples and oranges. So much more femme.  She creates houses, hotels, beds, kitchens. You name it for a house and she has probably fashioned it out of Lego. So for her 9th birthday it was no brainer what she wanted her cake to be.

The Lego cake

I decided that as there weren’t too many friends coming along to her cinema trip birthday celebration I would do what I did with her cake last year and make individual cakes for all the guests. One large purple Lego brick was for Beau and each friend had their own smaller (but still decent size) mini cake to take home.

How to make a Lego cake

The Cake Board

For this cake I decided the best way to set it out was to have one large rectangular drum board (16″x 14 “) for all the small thin boards (4″x4″) to sit on. I only iced the top half of the board so that the smaller ones would sit perfectly alongside each other without moving around too much.

To get the Lego look on the cake boards I tried out a few techniques but the one I had the most success with was using the top of a Lego base board to imprint divits into the sugarpaste. Ideally I would have liked to have had those little Lego dots sticking out on the top but the sugarpaste just wouldn’t come out of the board evenly and it just looked messy. So I used the reverse look. No-one seemed to mind- not even Beau.

Once the icing was rolled out and adhered to the board with a damp sponge I placed the largest Lego base board I could get my hands on and pressed it into the sugarpaste. (I should mention here that I did give it a really good clean first. You know how mucky kids can be!) I measured 8″ from the non-sugarpasted side and cut a straight line across, removing any excess before leaving it to dry out.

For the smaller boards I used the same method only I placed the cake board under the sugarpaste and smoothed it with my hands. The excess was only removed after the Lego imprints were made as the sugarpaste tends to squidge out at the sides as you press or roller the divits in. 

To shape a Lego cake

I started off with two square cakes, which were leveled and sliced into even rectangles. 

When shaping chocolate cake it can be a bit of a nightmare. My recipe is so fresh that it just crumbles as you touch it. I often try to leave a chocolate cake over night before I shape it or add buttercream to avoid the crumb nightmare that usually ensues!

But I made this cake in the morning and had to decorate it in the evening. To combat the crumbling effect I placed the shaped cakes in the fridge for around 15-20 minutes to let them firm up a little.

I made sure that the chocolate buttercream was softer than usual by adding a little extra milk. This makes it easier to apply to the cakes with a pallette knife. I didn’t worry too much about making it neat. I just covered each cake and popped it in the fridge to firm up.

In hindsight I wish I had placed a layer of buttercream in a middle layer but I have a sneaking suspicion that the cakes really would have ended up as mush! 

Once they have been chilled cover each cake with sugarpaste. Smooth each side and make each corner as square as possible. Remove the excess and set to one side. 

To make the tops of the bricks I used my circle plungers and ‘stuck’ each one down with a touch of Royal icing.

Each Brick was positioned onto it’s baseboard with some Royal icing. Some facing front, some to one side to add a little interest. 

Names were added to each cake.

I then positioned the mini boards onto the large one, again using royal icing to hold them in place.

At the very last minute I decided that the cake needed something else so I made a Lego Beau. She loved it and she is sitting on our kitchen window sill right now.

After we sang happy birthday each cake was individually wrapped up and given with the goodie bags.

I like doing these individual cakes for birthday parties. It feels extra special for everyone to have their very own cake. Don’t you think?

EmmaMT

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7 Comments on How to make a Lego Birthday cake

  1. bakearama
    November 23, 2012 at 3:13 pm (2 years ago)

    Oh my this is amazing! My best friend would LOVE this… I will definitely be trying one for him next year :-)

    Reply
  2. rowena
    November 24, 2012 at 9:49 pm (2 years ago)

    Looks Great but i am not that clever to try making the great cake

    Reply
  3. trangquynh
    December 1, 2012 at 8:33 am (2 years ago)

    such a creative idea, and thank you for the post with all the steps in details :)

    Reply
  4. Anna
    December 27, 2012 at 2:33 pm (2 years ago)

    This has to be the most tasteful lego cake I have ever seen. Most of the time these end up looking like a food coloring overdose waiting to happen, but your cake looks totally edible and adult friendly :)

    Reply
    • EmmaMT from CakesBakesAndCookies.com
      December 27, 2012 at 2:48 pm (2 years ago)

      Thanks. It helps that Beau likes the Lego Friends range which is much prettier than the regular collections. Saying that it is still taking over my living room at this very moment!

      Reply

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