Low-Calorie Sponge Tray Bake with Sugar-Free Icing


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Prep information

Prep time
10 minutes
Cook time
35 minutes
Recipe by
Michael at Lo-Dough

Nutritional information (per portion)

55 kcal

This low calorie dessert is a retro classic and virtually sugar free!

Sugar free, but still full of sweet nostalgic flavour, this iced tray bake really hits the spot. For under 60 kcal a piece and virtually zero sugar, you'll be amazed how fantastic these taste. 

Fuss-free retro desserts without the calories

Inspired by school dinner classics, this tray bake is a fuss-free way to get delicious cake on to your plate and into your belly. Line a rectangular (a brownie tin works perfectly) and add your cake mixture. While it bakes, mix some powdered erythritol, creme fraiche and water to create an icing. If following keto, set up the icing with a little xanthan gum, or if not worried about a little starch, use cornflour. The hundreds and thousands are an optional decoration and the only sugary addition if using. 


Serves 6
  • 1 Lo-Dough vanilla sponge mix
  • 240g of water
  • 4 tablespoons of erythritol
  • 2 tablespoons of half fat creme fraiche
  • Thickener (xanthan or cornflour both work)
  • Water to loosen the icing
  • 100s and 1000s (optional)

What you'll need

This diet-friendly recipe is possible with:

Lo-Dough Vanilla Sponge Mix

Lo-Dough Vanilla Sponge Mix

Regular price £2.50 £5.49
Out of stock


  1. Make up the Vanilla Sponge Mix according to the packet instructions (Oven preheated at 180C).
  2. Bake the mix in a square/ oblong tray for 35 minutes, then allow to cool, again as per the instructions.
  3. While the cake bakes, mix up the erythritol, creme fraiche and thickener and loosen to a desired consistency with water. Drizzle over the top and decorate with sprinkles if your diet allows the sugar.

If looking for a healthy, colourful decoration, freeze some raspberries and smash them up into individual seeds for small, red-jewel decorations.

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