Pre-heat the oven to 180 degrees C

Line a baking tray or grease

Melt the butter gently in a saucepan

Remove from heat

Mix in the sugar

Mix in the oats

Press the mixture evenly into the tin

Bake in the oven for 15 minutes or until golden brown

Remove from the oven and score into 12 pieces

Leave to cool

Remove from tin and consume or store in an air tight container