200g peanut butter - crunchy or smooth - your choice! If it's a really thick peanut butter you might need a bit more coconut oil
3 tbsp coconut oil
300g milk chocolate
Grease a 9 x 9 inch, or similar, brownie tin with butter or coconut oil and set aside.
In a large heatproof bowl, combine your peanut butter and coconut oil, and melt together in 30 second intervals on high power.
Once they're completely liquid and combined, stir in your oats. Mix well, and tip into your square tin. Press down firmly with the back of a spoon (if it's sticking, dip in some coconut oil first).
Put the oat mixture to one side.
In a heatproof bowl in the microwave, melt the milk chocolate on 30 second bursts of high power, stirring after each one. Pour over the bars, spreading out with a spoon (and creating swirly patterns if you like)!
Pop into the fridge to set - they should be ready to cut in under an hour. Store in an airtight tin on the counter - or in the fridge if its very hot.