School Dinner Iced Sponge Recipe

Ah memories! Hot custard drizzled over a sweet sponge cake and crunchy sugar strands. This recipe is sure to bring back memories of youth with the added bonus of being allergy friendly. This recipe is ridiculously simple but everyone will love it… Result!


Caster Sugar 190g

Unsalted Butter (can use dairy free alternative) 190g

Free Range Eggs 3g

Self Raising Flour 190g

Xanthan Gum 1tsp

Baking Powder 1tsp

Icing Sugar 150g

Sprinkles 1tbsp


1. Preheat oven to 280 degrees C

2. Cream together butter and sugar until smooth

3. Add eggs and mix until combined

4. Add flour, baking powder and xanthan gum and mix until combined.

5. Grease square baking tray (15×15 ish) with butter and baking paper. Pour in mix and spread evenly. Bake in oven for 20-25 minutes/ until brown and springy.

6. Remove cake from oven when cooked and allow to cool. Do not take it out of the pan until serving.

7. Mix icing sugar with water, a teaspoon at a time, and (optional) food colouring of your choice. Aim for the consistency of a thick cheese sauce, so that it is not too runny. When the sponge has cooled, pour the icing over the sponge and spread to the edges of the tin and cover with sprinkles.

Voila, serve with hot custard.

LiberEat’s content is not intended to be a substitute for professional medical advice. You should always take precautions and use appropriate judgement to protect yourself and others under your care with regard to food allergies.

Food allergen rules and regulations continue to change and evolve. Food businesses in production, hospitality, catering, and retail must be vigilant when working with ingredients, products, and dishes containing allergens and exercise due diligence when providing ingredient and allergen information to consumers. Successful allergen management is a big part of food safety professionals’ creating a culture of care and excellence within their teams.

LiberEat offers a second line of defence for food businesses by detecting errors, allergens, and other harmful ingredients with our proprietary Allergen Error Detection Technology. Food businesses can apply this technology directly to identify errors in allergen communications, preventing the risk of injury to consumers 24/7, 365 days of the year so that errors are detected, diagnosed and rectified quickly. We know this helps you protect your brand reputation and enhance customer trust in your brand. 

Contact us today to learn more about how we can support your existing food safety processes.

To find out how LiberEat Technology supports food businesses to detect allergens and errors, to protect consumers