Preheat the oven to 180°C fan bake. Line a 28 x 16cm baking tray with baking paper.
In a large saucepan, melt together the butter and honey. Stir to combine.
Remove from the heat and add the rolled oats, and all other ingredients. Mix together until combined.
Press the mixture firmly into the prepared baking tray. Bake for 15 minutes or until it starts turning golden.
Remove from the oven. Leave to cool for 20 minutes and then place in the fridge to cool completely in the tray.
Remove from the fridge once set, then use a sharp knife to cut into long bars or squares.
