Preheat your oven to 180oC
Add the egg, milk, salt and vanilla to a bowl. Whisk until smooth.
Add the flour and baking powder. Whisk until smooth.
Line a baking tray/casserole dish/cake tin with baking paper.
Pour the mix into the tin and place into the centre of the oven for 13 mins.
Remove the pancake from the oven, pour the apple mix over the top and return to the oven for 7 mins.
Remove from the oven, leave to sit for 3 mins and then slice up and eat!!
Tip: it’ll hold its shape really well, so if its easier, lift the baking paper and pancake out of the tin and slice on a chopping board.