Sugar-free chocolate brownies

Prep Time: 
30 mins
Cook Time: 
30 mins to 1 hour
Makes 16 squares
Oil for greasing
Self raising flour
cocoa Powder sifted
1 tsp
Bicarbonate of soda
Butter cubed
100ml/3½fl oz
semi skimmed milk
Large eggs beaten
Sweet potato finely grated
Large very ripe banana, mashed
  1. Preheat the oven to 200C/180C Fan/Gas 6. Grease and line the base and sides of a 23cm/9in loose-based square cake tin with baking parchment.

  2. Mix the flour, cocoa and bicarbonate of soda in a large bowl. Make a well in the centre.

  3. Put the butter in a medium saucepan and melt over a low heat, stirring regularly. Take the pan off the heat and stir the milk into the melted butter. Add the eggs, sweet potato and banana, stirring vigorously.

  4. Pour slowly into the flour mixture, stirring constantly with a wooden spoon to form a thick batter. Pour into the prepared tin.

  5. Bake in the centre of the oven for 30-35 minutes, or until the cake is risen and just firm to the touch.

  6. Serve warm or leave to cool in the tin before cutting into squares.