Gingerbread Slab Cake

Feeds a crowd!

This would also be great packaged up in pretty boxes as a holiday gift. It is easy to make and tastes delicious. The hint of lemon in the buttercream frosting works perfectly with the dense gingerbread cake.

If you want to be really fancy then you could pipe the icing and go crazy with the decorations. (I used simple sprinkles but only because it makes it easier to cut into smaller pieces.)

I got this recipe from the December 2017 issue of Super Food Ideas magazine but I adapted the frosting to my preference.

Ingredients – makes about 35 bite-sized pieces:

  • 125g/4oz unsalted butter, diced
  • 1 cup brown sugar
  • 1/2 cup treacle
  • 1 teaspoon bicarbonate of soda (baking soda)
  • 1 egg
  • 2 cups plain (all purpose) flour
  • 1 tbsp ground ginger
  • 1 teaspoon ground allspice


  • 100g/3oz unsalted butter, softened
  • 2 cups icing (powdered) sugar
  • 2 teaspoons lemon juice
  • red and green sprinkles, to decorate


  • Put the butter, sugar and treacle into a medium saucepan and place over a low heat. Cook, stirring occasionally, until the butter melts. Bring to the bubble then remove from the heat and stir in the bicarbonate of soda. The mixture will foam up and fill the saucepan. Set aside for 10 minutes to cool as it will be very hot.
  • Heat your oven to 180C/160C fan forced/350F. Line a slice pan which is 30cm x 20cm (12 inches x 8 inches) with non-stick baking paper.
  • Transfer the treacle mixture to a heatproof bowl. Add the egg and stir to combine.
  • Fold in the flour, ginger and allspice then quickly transfer to the prepared pan and spread evenly.
  • Bake for 20 minutes or until just firm to the touch, then remove from the oven and leave to cool in the pan.
  • To make the frosting, beat the butter until pale and smooth then gradually add the icing sugar. Beat until creamy then stir in the lemon juice.
  • Spread the frosting over the cooled slab cake then decorate with sprinkles. Cut into bite-sized squares and serve.
  • Enjoy!

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3 Responses to Gingerbread Slab Cake

  1. mistimaan says:

    Looks too yummy………loved it 🙂

  2. chefkreso says:

    Delicious, looks so moist and soft and tasty!

  3. leniq says:

    OMW! That sounds and looks delicious. I love gingerbread.

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