In a large mixing bowl cream the butter and sugar until light and fluffy
Add the vanilla extract and egg to the mixture and combine well
Sift the flour and bicarbonate of soda into the mixture, add the medium oats and fold in using a flexible spatula
Add the sultanas and desiccated coconut and fold in until well mixed
Form spoonfuls of the cookie dough into balls in the palms of your hands and place them well apart on the lined baking sheet. Press the tops of them down ever so slightly
Put the tray into the centre of your oven and cook for 10-12 minutes until the cookies are a golden brown
Remove from the oven, leaving the cookies on the tray for a couple of minutes. Transfer the cookies on to a wire rack to cool completely
Follow stages until all the cookie dough has been used
They can be stored in an airtight container for up to 5 days