Pre-heat the oven to 180ºC
Add the oats, yoghurt, egg, cinnamon and sweetener , into a bowl and stir until combined.
Pour into an ovenproof dish and bake for 35-40 minutes.
While the oats bake, add the drizzle ingredients to a small bowl and mix together until smooth.
When the oats are baked, top with the cinnamon drizzle and serve.