Instructions

1. Preheat oven to 180c/350f (gas mark 4)
2. Add to a bowl the oats, baking powder and salt and mix to combine, set aside.
3. In a separate bowl add the mashed banan, yoghurt, eggs, vanilla extract and sukrin: 1 whisk until smooth.
4. Add this to the oat mixture and stir until all combined. 
5. Pour into an 8x8 square brownie pan, lined with parchment (if not using parchment, you will need to grease the pan well with spray oil).
6. Add the oreo's to a bag and crush into small pieces by bashing with a rolling pin.
7. Sprinkle on top of the oat mixture, and carefully push down into the mixture with a spatula, you want them to be half in the mixture, half sticking out on top.
8. Place in the oven and bake for 40 mins until lightly golden - a skewer entered into the centre should come out clean. 
9. Allow to cool slightly, carefully remove from the pan.
10. Add the white chocolate to a bowl and microwave for 30 secs and stir till melted. Add to a snack size ziplock bag and squeeze down into one corner, snip off a small piece of the corner and then pipe the melted white chocolate across the top. Allow to set and then slice into 16 equal sized bites.
11. Enjoy!!