Sean Callahan's
Fiancée’s rainbow birthday cake
![](https://thegreatbritishbakeoff.co.uk/wp-content/uploads/formidable/6/20210624_101318-450x450.jpg)
- Bake type: Cakes
- Made in: Barnsley
- Skill level: Medium
- Time taken: 4 hours
Top tip
Put your cake in the freezer before icing it to get a straight smooth finish.
Put your cake in the freezer before icing it to get a straight smooth finish.