Ann Reardon

3D Thomas Train Cake Recipe


Would your Thomas obsessed pre-schooler love a themed birthday party with an amazing cake in the shape of the famous little blue train?  Well, you’re not alone. Thomas the Tank Engine toys are amongst the best-selling preschool items in the US, UK and Australia. Kids everywhere love a Thomas party and thankfully, plenty of other brave parents have paved the way (check out their party ideas here). And read on for step by step instructions to make the 3D Thomas train cake.


To make this Thomas Cake you will need:

The Cake & Fondant Template


This Thomas cake will serve 40 people, you can scale it down if you have less guests.
Cake: two and a half times the rich chocolate cake recipe baked into five trays 25cm (9.84 inches) x 38cm (14.96 inches) baked at 356F (180 degrees Celsius) for 20 minutes.

thomas train cake tutorial

Fondant for thomas train cake

400g (14.11 ounces) black fondant
650g (22.93 ounces) blue fondant
450g (15.87 ounces) red fondant
30g (1.06 ounces) yellow fondant
160g (5.64 ounces) grey fondant
Note: Fondant quantities are actual amounts used on the cake, so allow extra for rolling out.

thomas train cake fondant ann reardon

Frosting for train cake:
Two quantities of buttercream recipe in flavour of your choice
Two quantities of ganache recipe, allow to cool completely at room temp overnight. Whip together with the buttercream, use to cover the outside of the train before adding fondant.

Equipment needed for train cake:

Fondant extruder (makes it quicker and easier but optional you can roll long skinny snakes instead).

Circle cutters
Pizza cutter (optional)
drinking straw to cut small circles
rolling pin
non-stick baking paper
spray oil
metal piping tip or something with 1.7cm (0.67 inches) diameter to cut circle

thomas train cake tutorial

To make the thomas train face see this previous post:
thomas train cake face how to reardon


1: Make the fondant details ahead of time so they can dry out (see video)

2: Bake the cakes, prepare the frosting and make the simple syrup.  This can be done 2 days before the party. See above for quantities.

3: Construct and decorate the cake the day before the party.  See the video for demonstration. You will need a very strong cake board that is at least 35cm (13.78 inches) long and 20cm (7.87 inches) wide.

4. If it is very hot where you live, store in the fridge otherwise room temperature is fine.

5. Enjoy the birthday boy or girl’s face when they see their Thomas cake. Don’t forget to take photos!
by Ann Reardon


My Cookbook

ann reardon crazy sweet creations cookbook
Stores that sell my book listed by country:
All recipe quantities in the book are in grams, ounces and cups.

794 Comments View Comments

  1. Rating: 5

    Thanks so much for the tutorial my Thomas obsessed little man loves his cake. First time using fondant so not perfect but happy with the result.

  2. Rating: 5

    Can I get the template for the thomas cake please

  3. Rating: 5

    Thank you for the amazing YouTube videos! Your instructions were invaluable for making my son’s Thomas cake.

    • Amazing cake!! Well done

  4. Rating: 3

    I just printer the template out but for some reason the base part of the cake is cut off. Is there a way to fix it?

  5. Rating: 5

    Hi Ann, I’m struggling to find the fondant and cake template as it won’t load properly every time I click onto buy, can you please help me thanks.

  6. Rating: 5

    Hi like to purchase the pattern for the Thomas train but I’m having trouble if you could email Meiomi I could probably do it that way

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