You will need a 23 x 30 cm traybake tin or roasting tin. Preheat the oven to 160°c/ 180°c/Gas 4. Grease and line the tin.
Place all the ingredients in a bowl and use an electric whisk to blend everything together for 2 minutes. Turn the mixture into the prepared tin and level the top.
Bake in the oven for 30-35 minutes or until the cake shrinks from the sides. Leave to cool in the tin.
Icing
In a bowl, mix together the lemon juice and icing sugar to give a runny consistency. Use a palette knife to spread out evenly. Sprinkle with desiccated coconut and leave to set before cutting into pieces.
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