Preheat oven to 375 Degrees (Convection Bake)

n a mixing bowl, put olive oil, all-purpose flour, oats, brown sugar, baking powder, cinnamon, and sliced butter into a bowl and combine together to form a crumble

Let the crumble chill in the fridge while you make filling

Peel apples and then thinly slice them into small pieces

Place apples into the mixture and combine

Spray rectangle baking dish (9×13) with olive oil spray

Place mixture into a rectangle baking dish

Get crumble from fridge and place onto filling mixture

Bake for 30-35 minutes until apples and crumble are golden brown

Set out to cool