Heat the oven to 200C/180C fan/gas 6.
Melt butter, sugar and golden syrup in the microwave
Add oats and any other additions (cinnamon, choc chips, dried fruit, nuts, seeds, etc) and mix
Line or grease a 20 x 20cm baking tin
Press the mixture into the corners so the mixture is flat and score into 12 squares.
Bake for around 15 mins until golden brown.
