• 250g plain flour
  • 1 tsp. baking soda
  • 1/2 tsp. baking powder
  • 1/2 tsp. salt
  • 226g margarine (or unsalted butter, but I always use margarine - not only is it cheaper but gives a much spongier bake)
  • 200g caster sugar
  • 1 large egg plus 1 egg yolk
  • 60g sour cream
  • 1 tsp. vanilla extract
  • 3 ripe bananas, mashed (see tips)
  • 100g Milk chocolate chips
  • 30g chopped toasted walnuts (see tips)


  • STEP 1
    Set oven to 180c and line a 8inch loaf tin with parchment paper.
  • STEP 2
    Take two of your three bananas and whisk them in a large bowl till they are smooth.
  • STEP 3
    Whisk in the vanilla, egg, yolk and sour cream till smooth.
  • STEP 4
    With a wooden spoon, beat in sugar and margarine/butter.
  • STEP 5
    Add the flour, baking powder, baking soda and salt, and gently fold in till only a few spots of dry ingredients remain.
  • STEP 6
    Add the chocolate chips, walnuts and the remaining banana chopped into chunks, reserving a small amount of the chocolate chips and walnuts, and fold into the mixture until just combined.
  • STEP 7
    Add the mixture to the tin and sprinkle the remaining chocolate chips and walnuts on top, pressing them in slightly.
  • STEP 8
    Bake for 45-50minutes checking until a tooth pick placed in the centre comes out clean.
  • STEP 9
    Allow to cool in the tin and then remove to a wire rack.
  • STEP 10
    Enjoy cold, warm with custard or a scoop of ice cream.
  • STEP 11
    Tips: Heat your oven to 100c, place your bananas on a baking tray and cook for 15 minutes - they should come out blackened and slightly soft. Heat your oven to 130c, place your walnuts on a baking tray and toast for 10 minutes shaking halfway through - they should be browned and smelling toasted - chop these into medium to small chunks. If things are looking to browned during cooking make a tin foil hat to rest on the top of your tin so the top isn’t exposed to the direct heat. Go wild with your add-ins and toppings - I ended up putting butter and honey onto mine on a freshly cut slice (judge all you want).

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