I adapted the crisp topping from kittenkal's recipe #80482 and adapted the apple part from Alton Brown's apple pie recipe. Alton's recipe called for tapioca flour which I didn't have, so I used about 1/4 cup minute tapioca and ground it up in my coffee grinder down to about 3 tablespoons. I use Ceylon cinnamon because it is floral and goes well with apples. This does have a long preparation time, but a lot of that is taken up in draining the apples, it is time you can be work on something else. Bottled lime juice works just fine in this recipe.