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–+ servings
School dinner cake sliced into squares

Gluten Free Old School Sponge Cake

Gluten free old School Dinner Cake. So easy and delicious. The perfect old school sprinkle tray bake is a fun party cake that everyone will love and no one will know it's gluten-free!
5 from 9 votes
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Course: Dessert
Cuisine: British
Keyword: gluten free, School Dinner Cake, sponge cake, sprinkle tray bake
Prep Time: 10 minutes
Cook Time: 40 minutes
Servings: 18 slices
Author: Amanda

Equipment

  • large baking tin I used 13"x10"

Ingredients

Sponge Cake

  • 450 grams Gluten free Self Raising Flour  To make self raising flour at home by mixing 2 teaspoons of baking powder with every 125 grams of Gluten free All purpose flour (Plain flour in the UK).
  • 450 grams Marg/Butter (Room temperature) To make Dairy free use Dairy free spread of your preference
  • 400 grams Caster Sugar
  • 7 Eggs (Room temperature)
  • 2 teaspoon Baking Powder
  • 2 teaspoon Vanilla extract
  • ½ teaspoon Xanthan Gum

Icing

  • 300 grams Icing Sugar Powdered sugar
  • 4-5 tablespoons Water
  • Sprinkles of choice
  • few drops Food Colouring (optional)

Instructions

Sponge

  • Preheat oven to 170°C/325°F/Gas mark 3
  • Prepare baking tin with grease proof paper. I prefer to fold paper over the sides of the tin as this makes it easier to lift the cake from the tin when cooled.
  • In a large bowl mix all the sponge ingredients together until it forms a smooth consistency.
  • Pour the mixture into prepared baking tin and spread out evenly.
  • Bake in the Oven for approximately 40 mins insert a skewer into cake after this time if it comes out clean its ready if not leave it in a slightly longer. (Times may vary slightly dependant on oven). Transfer tin to cooling rack and leave to cool.

Icing

  • Sieve icing sugar into medium size bowl. Add 1tsp of water at a time and mix until you get desired consistency.
  • Add food colouring if desired.
  • Spread Icing over cake evenly and then drop over desired sprinkled (I like to use brightly coloured sprinkles for that Retro look).

Notes

 
NOTE: Always check that all your ingredients are gluten free. Some Sprinkles do contain gluten so always read the labels.
STORAGE: This can be stored in an airtight container for you to enjoy for up to 5 days.
SERVING SUGGESTION: Service with hot custard for that true nostalgic feeling.
FREEZING: The sponge can be frozen in a freezer safe container for up to 3 months. Then add icing once defrosted.