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8
Easy
Published 1999
Cream together the butter and sugar in a food-processor, or by hand, until light and fluffy.
Slowly add the egg, ensuring you scrape the sides of the food-processor bowl.
Turn the mixture into a bowl and carefully fold in the baking powder, vanilla essence, flour and chocolate buttons and mix well.
Rest in the fridge for 30 minutes or so until the mixture is pliable but
