Custard sponge slice

Custard sponge slice

  • DifficultyEasy
  • Prep0:15
  • Cook0:35
  • Makes 12
Greer Worsley
by Greer Worsley Last updated on 11/11/2020
This scrumptious custard sponge slice has a sneaky layer of custard between the two layers of cake, making it that extra bit special. Even better, it uses a packet cake mix so it’s a breeze to whip up. - Greer Worsley
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Ingredients

  • 1 pkt vanilla cake mix
  • 2 eggs
  • 2/3 cup milk
  • 60g butter

For the custard

  • 1/4 cup custard powder
  • 2 cups milk
  • 2 tbs caster sugar

For the topping

  • 20g butter, melted
  • 1 tbs caster sugar
  • 1/2 tsp cinnamon

Method

  • Step 1
    Preheat oven to 160C. Grease a 27cm x 18cm slice tin and line it with baking paper.
    Custard sponge slice
  • Step 2
    Prepare cake with eggs, milk and butter according to packet instructions. Pour half the batter into the prepared tin.
  • Step 3
    Make custard by whisking custard powder into 1/4 cup milk to form a smooth liquid. Add the remaining milk and sugar. Whisk over gentle heat until just simmering, then continue stirring for another minute until custard has thickened.
  • Step 4
    Pour custard over cake batter in slice tin and spread out evenly. Top with remaining cake batter and smooth the surface. Bake for 35 minutes. Brush melted butter over hot cake then sprinkle over combined caster sugar and cinnamon.
  • Step 5
    Pour custard over cake batter in slice tin and spread out evenly. Top with remaining cake batter and smooth the surface. Bake for 35 minutes. Brush melted butter over hot cake then sprinkle over combined caster sugar and cinnamon
Recipe Notes

You don’t need to use a packet cake mix for this recipe but it makes it extra simple. Use your favourite vanilla cake recipe instead.

This cake stores well in the fridge for up to 5 days.

Recipe and photo by Greer Worsley.

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