Preheat the oven to 180ºc / Gas 4. Line a 18 x 28cm (7 x 11in) rectangle tin with baking paper.
With an electric whisk, beat the butter and sugar until pale and creamy.
With a spoon alternatively add the eggs and flour and mix until all combined.
Stir in the coconut and cherries until all combined.
Spoon the mixture into the tin and back for 30 - 35mins until golden and a skewer inserted into the centre comes out clean. Leave to cool in the tin, then cut into squares.