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Nutrition: Per serving (20)

  • kcal301
  • fat14g
  • saturates8g
  • carbs40g
  • sugars30g
  • fibre1g
  • protein3g
  • salt0.23g
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Method

  • step 1

    Heat the oven to 180C/160C fan/gas 4. Butter a 20 x 30cm rectangular baking tin and line it with baking parchment. Beat the butter and sugar together with an electric whisk for a few minutes until pale and creamy.

  • step 2

    Crack in the eggs, one at a time, beating well after each addition — don’t worry if it looks curdled.

  • step 3

    Add the vanilla, flour, baking powder and a pinch of salt. Fold together gently with a spatula until just combined, then stir in the mashed banana and chocolate chips. Scrape into the tin and smooth the top. Bake for 35-40 mins until golden and a skewer inserted comes out clean. Leave to cool completely in the tin.

  • step 4

    To make the icing, sift the icing sugar into a bowl and stir in just enough lemon juice to make a thick, pourable icing (add the juice gradually — you might not need it all). Drizzle it over the cooled cake, then scatter with the banana chips. Leave to set before slicing into squares. Will keep in an airtight container for up to five days.

Recipe from Good Food magazine, September 2025

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