Mamta's Kitchen

Banana, Walnut and Mixed Fruit Cake in a Microwave Oven

Banana, Walnut and Mixed Fruit Cake in a Microwave Oven

Mamta Gupta

This cake is cooked in a microwave, so suits those of you who do not have a conventional oven or are in a hurry. I don’t use icing, too much sugar for me, but icing suggestion is given here. Makes 8-10 squares.

This recipe has been modified/adapted from a couple of recipes on the internet and I have added some mixed fruit, just because I happened to have some in the cupboard.


  • 2 standard sized, over ripe bananas (approximately 250 gm.)

  • 90 ml cooking oil or softened butter (soften in a microwave bowl for 1 minute on full heat)

  • 90 gm. soft brown sugar or caster sugar or Shakkar

  • 1 large egg at room temperature

  • 125 gm. self-raising flour

  • 50 walnut halves, coarsely chopped (use a chopper or chop with a large sharp knife on a chopping board)

  • 50 gm. mixed fruit or raisins*

  • 3-4 tbs. milk, if needed

  • *Mix fruit is a readymade mix of sultanas, currants, raisins, orange and lemon peel , glacé cherries, dried apricots and other fruits.

  • Icing

  • 100 gm. icing sugar

  • 2 tbsp. lemon juice, freshly squeezed

  • 50 gm. walnuts, finely chopped


  1. Line a microwave suitable baking dish with a grease proof paper or silicone baking sheet (makes it easier to get the out later).

  2. Mash up the banana and keep aside.

  3. Mix 1 tbsp. flour (from measured amount) to mixed fruit/sultanas, keep aside.

  4. Place softened butter and sugar in a bowl and beat until creamy.

  5. Add the egg and beat again until smooth.

  6. Stir in mashed bananas.

  7. Sift in the flour and fold gently with figure of 8 motion of a spatula. If it is too stiff, add a little milk at a time until you have a 'dropping' consistency. I don't usually need to add the milk.

  8. Add and fold-in the mixed fruit and walnuts.

  9. Transfer to a lined baking dish and cook on full power (mine is 800) for 5 +2 +2 minutes, more if required. Test it by inserting a skewer or a pointed knife after each break, it will come out clean and cake will feel spongy when ready.

  10. Rest for 2-3 minutes, turn it out on a wire rack and peel off the paper. Allow to cool. Cut into squares and store in an airtight box when completely cool.

  11. Icing; place icing sugar and lemon juice in a microwave-safe bowl. Stir the juice in.

  12. Heat on full power 40 seconds. Pour icing over the cooled cake. Sprinkle the chopped walnuts while still wet. Allow to cool completely before slicing.

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