

Preparing the filling:
Mix the fruit together in a large bowl. Add the lemon juice to cover. Add the cornstarch, sugar and spices and mix together thoroughly. Put the mixture in a baking pan (any size that is appropriate for the mixture) that is large enough to allow for about an inch clearance. Bake in an oven pre-heated to 375 for about 30 minutes (or until bubbly).
Crumble topping
Note 1: If you can't find the flours listed about try others. As I'm learning, the key with gluten-free baking is that you typically can't use just 1 of any type of flour -- because no one flour "fits the bill" like white/wheat flour. If you go in with the attitude that the worst that can happen is that the crumble won't quite meet your expectations -- but the results of the dessert will still be tasty -- what's the worst that could happen?!
Note 2: The above portions can be increased or decreased depending on the amount of filling you have and the amount of topping you enjoy on your treat. OR you can also make extra and freeze for another day!
Preparing the topping:
While the filling is baking and the butter melting on a burner set to low, combine the dry ingredients in a large bowl. Slowly pour in the melted butter into the dry mixture and combine completely. The mixture will look a little like a moiste cookie dough. When the fruit is done baking, add the topping, spreading out evenly across the top of the fruit. Return to the oven and heat for another 15 minutes (or until the topping takes on a nice golden brown color). When you take it out of the oven, you can also add a little demerara sugar (i.e., raw sugar) on top for a nice little added touch. Let it cool for at least 15 minutes. (Personally, I think it tastes even BETTER the next day.)
ENJOY! Eat well and live beyond yourself.