Apple crumble (aka apple crisp) is a dessert that has always been close to my heart. My mother would often prepare one to have after a roast dinner. There was nothing more satisfying on a cold night than to relax with a plate of warm apple crumble and whipped cream. I like to make mine with granny smith apples so the apples have a tartness to them which pairs perfectly with the sweet crumble. This recipe is highly adaptable: use a sweeter apple if you prefer, and maybe include walnuts in the crumble topping. If cooking for a larger group, you can double the recipe to fit a 13×9 inch pan.