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Slab Cake Sizes, Dimensions and Servings: Complete Guide
Last updated: 7 August 2026
A slab cake is a large, rectangular cake designed to be cut into individual portions for birthdays, morning teas, functions and catering.
At Padstow Food Service, a standard full slab is approximately 30 cm × 40 cm, while a standard half slab is approximately 30 cm × 20 cm, unless a particular product states otherwise.
Slab cakes make serving a crowd straightforward. They are easy to portion, available in a broad selection of flavours and can be kept fr
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24th Jul 2026