Simple DIY Lego Birthday Cake
Hosting a LEGO themed birthday party is a fun theme idea for a kid who loves building blocks. And when you start planning your kid’s party, you can’t forget the cake! Luckily, making your own adorable LEGO birthday cake for your party is simple when you have a few handy supplies. Keep reading to see how to make your own simple birthday dessert party treats decorated with chocolate LEGO bricks.
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Isn’t this DIY LEGO cake so adorable? And while I think it’s just too cute, you won’t believe how easy this birthday cake recipe is to make! You just have to grab a few simple supplies to whip up your own party dessert at home for your kid’s LEGO birthday.
DIY Lego Birthday Cake
There’s no reason to hire someone to make a LEGO cake for kid’s birthday when you can easily make one yourself. Even if you’re not the greatest baker or decorator, you can put together this simple LEGO birthday cake recipe on your own using my super simple tips and tricks!
Since this LEGO cake is so easy to make, you only need a few supplies to prepare them. To make your own cake decorated with chocolate building bricks, you’ll need:
- Cake and icing. The most important part of this classic birthday treat is the cake itself. But I have some good news for you — there’s no special recipe you need to make it! You can use any flavor of cake and any type of icing you want. So, whip up your cake however you want — I used a boxed chocolate cake mix and made my own chocolate icing. Or you could just grab a plain cake from the grocery store and add your own LEGO decorations to it.
- LEGO brick candy mold. The key to turning a plain and boring birthday cake into a cute LEGO cake is the chocolate bricks. And that means you’re going to need one special tool to create your own LEGO cake decorations — a candy mold. This LEGO candy mold set is perfect for decorating your cake, cupcakes, or even creating some cute candy for your party, too!
- Colored melting chocolate. Once you have your molds ready, you’ll also need some melting chocolate. You can grab yours at the link listed above or check out the party section at Wal-Mart to find melting chocolate there. I grabbed several different primary colors to decorate my cake, including red, blue, orange, and yellow.
- Rainbow sprinkles. Add a pop of color to the top of your cake with the help of some rainbow sprinkles.
- LEGO candles. The final touch on the top of your LEGO birthday cake is the candles! Luckily, you can grab some Betty Crocker candles that look just like LEGO bricks at Wal-Mart or on Amazon.
How to Make a Lego Cake
Now that you have all your supplies gathered up, it’s time to start baking! First, prepare your cake and frosting. It doesn’t matter what flavor of cake you use. My birthday boy requested a “big chocolate cake,” so that’s what I made!
Once your cake is ready to go, you can start decorating! But before you can add the LEGO candy to your cake, you have to make them. Luckily, it’s so simple to prepare these colorful chocolate bricks.
You’ll have to prepare each color of your LEGO bricks separately. Pour your first color of melting chocolate into a microwave safe bowl and melt them according to the package instructions.
When the chocolate is fully melted, carefully spoon it into the silicone candy mold. To ensure the chocolate goes down into each small circle on the top of the LEGO candy, try using a toothpick to push the chocolate into each hole. Then, fill the mold to the top.
Give the mold a light shake to help even out the melted chocolate, then place it on a flat surface to set. You can speed up the setting process by placing the mold in the refrigerator.
Once one color is fully hardened, carefully pop it out of the mold and wash the mold, if needed. If you wash the candy mold, make sure it is completely dry before adding more melted chocolate. Leftover water can cause the candy to discolor as it hardens.
How to Decorate a LEGO Cake
Now that the you have all your chocolate LEGO bricks ready to go, you can start decorating your cake!
Use your chocolate LEGO bricks to decorate around the bottom of the cake. Simply press the bricks into the icing to secure them in place. You can create a couple of rows of bricks around the bottom of the cake or cover the entire side of the cake with the bricks, if you want.
Then, top the cake with your rainbow sprinkles to add even more color to your birthday dessert.
After that, the only thing left to do is press the candles on top! We used LEGO brick candles, along with a number 4 candle, to celebrate my son’s fourth birthday.
LEGO Birthday Cake Recipe
Make your own DIY LEGO birthday cake for your next party with this simple recipe and decorating technique.
Ingredients
- 2 boxes chocolate cake mix, prepared in round cake pans
- 2 jars chocolate frosting
- Rainbow sprinkles
- Red, blue, and orange melting chocolate
- Silicone candy molds
Instructions
- Prepare the cake according to the package instructions and layer the cakes with icing.
- Melt each chocolate candy melt according to the package instructions. Spread the melted chocolate into the mold and allow it to harden completely.
- Use the candy to decorate the bottom of the cake.
- Decorate the top of the cake with the rainbow sprinkles.
- Place the candles on top.
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More Fun Lego Activities:
Lego Popsicle Stick Catapult Activity
Lego Parachute Coffee Filter Activity
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Emily is a midwestern mom of two boys. She loves all things DIY — from home renovations to kids birthday party planning. Whether she’s making a new farmhouse craft for her home or helping her kids with a cool activity, you can bet she’s in the middle of some kind of DIY project (or three) right now!
The cake looks delicious and beautiful.
How many packets of melting chocolate did you use to cover the cake with blocks like you did ?
Thanks.
I used one full package of the melting chocolates in each color. But don’t think I ended up using all the chocolates on the cake, so you probably wouldn’t even need a full package of each color.