Raisin and banana cookies

Preheat the oven to 180°C (350°F, gas mark 4). Combine the butter, sugars and vanilla in a large bowl and beat together with a wooden spoon until light and fluffy. Add the beaten egg and mashed banana and mix together. Then stir in the flour and raisins until well mixed and all the flour is incorporated. Using a spoon, divide the mixture into 16 equal amounts and place on lightly greased baking trays, leaving space in between each to allow for spreading during cooking. Top each cookie with a banana chip then bake in the preheated oven for 8-10 mins or until golden brown. Remove from the oven and leave to cool for 2-3 mins before removing from the baking trays and transferring to a cooling rack to cool completely.