Construction Cake

I look forward to making a cake for our kids’ birthdays every year! It’s just one of those little things I love to do but if I did it too much I’d probably hate it. With that in mind, ever since we decided on a Construction theme for Big Brother’s 4th birthday, I couldn’t wait to make his Construction Cake! What screams boy more that dirt, trucks, mess, and rocks… or at least the boys in our house that is! I had planned on creating a round ‘construction yard’ for a cake, but soon realized that would never feed the almost 40 guests we invited. 

I soon decided to create a road to the construction yard that I could make a second flavor and use to display even more trucks. It worked out perfectly and loved how it turned out. Big Brother typically wants to help and watch as I make his cakes, but this year he was too busy playing with his friends to take too much interest. When he woke up from his nap and saw the final product of his Construction Cake, he was so excited and couldn’t stop staring at it. That made the two days of work completely worth it! 

Construction Cake #constuctioncake #buildercake #birthdaycake

Note: Please note that my cakes are completely amateur; I’m just a mom who loves to bake! I don’t own all the ‘cake tools’ so I typically improvise and use whatever I have available. This tutorial is more for inspiration rather than a step-by-step of how to create a Construction Cake. 

Ingredients & Materials:

  • 2 White Cake Mixes (*When baking cakes I typically use Duncan Hines) 
  • 2 Chocolate Cake Mixes
  • 2 Whipped Vanilla Icings
  • 2 Whipped Chocolate Icings
  • White Fondant (I prefer Charm City Cakes or Wilton brands)
  • Black Food Gel
  • Yellow Food Gel
  • Brown Sugar
  • Large wooden board (cake board)
  • Chocolate Rocks (available at Michaels Craft Stores)
  • S’more Sprinkles– aka Pebbles  (available at Michaels Craft Stores)
  • Construction Cone Candles


Day One: Bake and Prep Your Cakes

1. Bake your two white cakes in loaf pans, then freeze.

2. Bake your two chocolate cakes in 9 in. round cake pans, then freeze.

3. Remove cakes from the freezer and gently cut off the tops of the cakes to level. a

4. Spread a thin layer of chocolate icing over one of the round chocolate cakes, then place the second round chocolate cake on top. Cover the entire double cake with a thin layer of icing to hold in all the crumbs. Place back in the refrigerator or freezer for the night.

crumb layer, construction cake

5. Spread a thin layer of white icing over the two white loaf pan cakes. Place back in the refrigerator or freezer for the night.

Day Two: Decorating the Cakes 

6. Begin by removing your fondant from the container, heating it a bit in the microwave, dying it the desired color using food gels, and then rolling it out.

rolling fondant, construction cake

7. Remove your ‘road’ or loaf pan cakes from the refrigerator or freezer. Cover them both with a thicker layer of white icing and then cover with black fondant. (Note: I only bought white fondant and then sections both black and yellow.)

Note: One of the things I would change if I were to make it again, is that I would have covered the two road sections with the SAME piece of fondant instead of covering them separately. I think this would not have broken up the road into section but rather continued with the clean look I was aiming for in the road.

8. Trim your edges, top the road with thin rectangular sections of yellow fondant. Around the base of your road, sprinkle a mix of brown sugar, chocolate rocks, and s’more sprinkles to create a rocky road look.

road section, construction cake

road completed, construction cake

9. Next, remove your round cake from the refrigerator or freezer. Cover it with a thicker layer of chocolate icing and then cover with black fondant.

10. Trim the edges, sprinkle a mix of brown sugar, chocolate rocks, and s’more sprinkles to create a rocky road look around the base of the cake.

11. Take a kitchen knife and gently cut a hole in the top of your cake where you want your digger truck to dig into the cake. Remove the fondant piece and fluff cake and icing up towards the top.

construction yard, construction cake

Use leftover cake trimmings to add to the pile if desired. Add additional decorations to the top if desire

Construction Cake 1

construction cake 2


Find More Construction Party Ideas:

Big Brother's Construction Birthday #boybirthdays #construction #builder #birthdays

Thinking of a Firefighter Birthday Instead?



  1. that is SOOO cute! I am always so impressed with the cakes others bake… I am not a baker. :o) the extent of my cake making is a box cake… or a zucchini cake, ha! I’m a new blog lovin follower… Emily @ nap-timecreations

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