Gluten Free Any Fruit Crumble (Edit recipe)

Fruit

1. Preheat the oven to 375° F. Spray a baking dish (9 by 13 or anything that's at least 2 inches deep) with baking spray and set aside.
2. Place the fruit in a large bowl and add the tapioca starch, sugar, and lemon juice. Mix to combine. Dump the fruit mixture into the prepared pan and set aside.

Crumble

1. Whisk together the flour, baking powder, brown sugar, and salt in a medium bowl. Add the cubed butter and, using a pastry cutter, a fork, or your fingers, work it into the dry ingredients until a dough forms.
2. Break up this dough into big and small pieces all over the top of the fruit. Place the pan on a larger baking sheet (to catch any drips) and bake the fruit crumble for 35-40 minutes, or until the crumble is golden brown and the fruit is bubbling (for the tapioca to properly thicken the fruit, it must be bubbling).
3. Remove from the oven and serve warm with vanilla ice cream, if desired.