THE PASTRY
100g butter, chilled and chopped into cubes
1 tsp sugar
90g plain white flour
60g oat flour (Mornflake Superfast Oats blitzed)
1 tbsp water
THE APPLE MIXTURE
4 apples, peeled and chopped into chunks
Splash of water
2 tbsp maple syrup
1/2 tsp cinnamon