(Gluten-free, dairy-free, can be Paleo and refined sugar free)
Add the chopped apples, sugar and cinnamon to a small saucepan with approximately 1/2 cup water. Heat on a medium heat, stirring occasionally, until the apples have softened.
Add the flour to the apple mixture and continue to stir until the liquid has thickened into a syrup.
Pour the apple mixture into the baking pan and layer with crumble topping.
Bake for 20-25 minutes, or until the apples have reached the desired texture. Allow to cool for 10 minutes before serving.
To make this grain-free:
For the apples - use tapioca starch instead of the all purpose flour and dissolve in 2 tbs hot water prior to adding to the apple mixture.
For the crumble - use coconut flakes instead of the oats, 3/4 cup almond flour and 1/4 cup tapioca starch instead of the all purpose flour and coconut sugar instead of brown sugar.