How to Make a Budget Beach Party Birthday Cake

by Marcy on March 5, 2013 · 4 comments

Budget Lego Friends Birthday Cake

Lego Friends Birthday Cake Idea

Recently, we hosted a birthday party for our oldest daughter. I’m all over the board when it comes to cakes. I have made my own cakes and cupcakes in the past, and I have also purchased them. This year when I asked my daughter what she wanted for her birthday her response was “To go to the beach!” Since we aren’t planning on going to the beach for a few more months, I asked her if it would be ok if we had a beach themed birthday party. Thankfully she was happy with that! She was even happier with the Lego Friends Birthday Cake Idea that I came up with.

This year I turned to Pinterest for some beach birthday party inspiration (you can view my beach birthday party Pinterest board here). I found a cake that I could use as a guide, but I needed to find a yummy cake recipe to use. I have heard great things about the Pioneer Woman’s Chocolate Sheet Cake Recipe, so I decided to give it a try – minus the icing. I’m not exaggerating when I say that this cake is DELICIOUS! Not only is it delicious, it stays moist for DAYS – something that I have had issues with in the past when making homemade cakes. It is also super easy to make cupcakes with this recipe – I tried that as well. I also love that the only item I had to purchase to make this cake was buttermilk – everything else was in my pantry.

Once I found a great cake recipe, I needed to figure out how to decorate the cake. Thanks to my mom I can make great butter cream and peanut butter icing, so the only thing left to figure out was decorations. My daughter is slightly obsessed with Lego Friends sets right now, so I turned to Amazon to see if they had any beach/swimming related sets. Lo and behold I found this super cute Olivia’s Speedboat set for less than $10. Plus the set could double as part of my daughter’s birthday gift! I was proud of myself for coming up with a cute Lego Friends Birthday Cake Idea. :-)

In addition to the Lego set, I purchased a package of plastic Palm Trees at a local baking shop (check out more cute Palm Tree Cake Toppers here). I also borrowed a few Lego people and miscellaneous items from Lego sets that we already had.

As you can see in the picture above, I used peanut butter icing as the sand, and used AmeriColor food coloring in Sky Blue to dye the butter cream icing to act as water ($1.75 at my local shop). I used a toothpick to trace the water line and the “Happy Birthday” lettering before piping it on.

I found a sparkly pink “7” candle at Walmart and really fun, tall pink striped candles at Target (not seen in this pic).

Overall I am thrilled with how the cake came out, and it tasted delicious! And it was honestly one of the easiest cakes we have made on our own. I have a feeling I’ll be “borrowing” from our Lego sets again in the future. :-) Do you have any cute Lego Friends Birthday Cake Ideas? I would love to hear them in the comments  below!

See below for my butter cream/peanut butter frosting recipe.

Butter Cream and Peanut Butter Icing
  • 1 stick Room Temperature Butter (I use unsalted)
  • 1 tsp Vanilla (I use the good stuff!)
  • 1 lb Powdered Sugar
  • 1-2 TBSP Milk (I eyeball it)
  • ¼-1/2 c Creamy Peanut Butter
  1. Mix butter and vanilla until smooth. (I use a hand mixer). Add powdered sugar and a splash of milk. Mix. Add additional milk sparingly until icing reaches your desired consistency.
  2. To make peanut butter icing, follow instructions above, then add ¼-1/2 cup of creamy peanut butter and mix. Add as much or as little peanut butter as you like to taste.


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{ 4 comments… read them below or add one }

1 Jennifer March 5, 2013 at 5:27 PM

I love it!

2 Cheryl March 11, 2013 at 10:57 AM

Yummy! My son LOVES chocolate & peanut butter together, I’m going to use your recipe to make a PB icing for his school cupcakes!
How many cupcakes do you get out of the PW sheet cake recipe?

3 Cheryl March 14, 2013 at 9:23 PM

I gotta tell ya, I made the PB frosting to go with the chocolate cupcake in a cone cupcakes I made for my son’s classroom. They loved them! I ruined one batch by adding too much coloring (yet when I used it for darth vader a few years ago it worked out fine?!?!) So I didn’t tint it at all & the kids thought I brought in DQ cones. & the taste was AHHHmazing!!!!
Thank you so much for sharing!!!

4 Marcy March 14, 2013 at 10:07 PM

Thanks Cheryl, so glad it turned out for you! I was worried to share because I don’t measure very well when I make icing. :-D

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