My boyfriend is an avid Lego collector. I decided this year for his birthday I’d make him a Lego cake. I goggled how to make a Lego cake. I watched a few videos and decided to go with Betty Crocker’s design. Betty Crocker for what I’m assuming is copyright reasons called it a building block cake.
The recipe said to use Betty Crocker Super Moist yellow cake because is holds up better than chocolate cake. I actually wanted to use a chocolate cake because the icing was vanilla so you can color it. I made a yellow and a chocolate cake in case one didn’t turn out. I baked both cakes and let them set over night to cool. The next morning I flipped the cakes. I was really glad I had a back up because the yellow cake crumbled when I flipped it out of the pan. The chocolate cake stayed together nicely. I put the cakes in the freezer to let them harden up before I decorated them.
While the cakes were getting cool I colored the icing. I again varied from the recipe and use regular food coloring and not gel food colors. The store I went to buy the ingredients didn’t have the right colors for I used what I had at home. I think the colors turned out fine. I made red, yellow, blue and a tiny bit of green. I cut the cake into three even sections and then the last section into 2 squares. I iced the first section with yellow. Betty Crocker calls this the crumb layer, just a base coat. I did the best I could not to have tons of chocolate crumbs showing. As you can imagine yellow icing and chocolate cake don’t want look so great. Then I put it in the freezer to get hard. I repeated with the other pieces. I ran into problems with the pieces I’d cut multiple times. They really started to crumble when I put icing on them. I put the second layer on the yellow and was pretty pleased with way it looked. Again, I put them back in the freezer before I applied the marshmallows.
To make the top of the cake I used marshmallows cut in half. I had read that you could microwave the icing when a few seconds and it would make icing the marshmallows easier. I did it for 10 seconds and that was too much. It was really liquid so I added a little of the extra white icing I had left. I used a fork to swirl the marshmallows in the icing under covered. I then used a knife to slide them onto the cake. I repeated until all were covered.
In the end the piece I cut into squares looked pretty bad so I called to the “playing with piece”. It was my boyfriend’s 28th birthday so I use a small piece of the white cake to make a 2 dot piece and the yellow 8 dot piece. He’s a leprechaun and has a St. Patrick’s Day birthday so I used the green and yellow pieces.
Here are some tips for anyone wanting to try the Lego cake out too.
- Buy extra icing. I used every bit of the 2 containers. I wished I’d had extra icing to use.
- I put the cake in the freezer for about 10-15 in between icing layers. I think giving it more time probably would have helped.
- Make the extra cake just in case. If both turn out you can always send the extra home with your party guests.
- Have fun with it, after all you’re doing out of love for someone.