Filling:

2 apples, peeled, cored, sliced thin
1 medium zucchini, sliced thin & halved
1 Tbs lemon juice
3 Tbs brown rice flour
2 Tbs stevia
1 tsp cinnamon
1/4 tsp nutmeg
1/4 tsp cardamom

Topping:

1 cup gluten-free oatmeal
1/2 cup walnuts
3 Tbs vegan margarine
3 Tbs stevia

In a large bowl, mix filling ingredients together. Butter an oven proof dish (I use a 6 cup glass casserole dish), pour filling into the dish. Preheat oven to 350* while mixing the topping. Put topping ingredients in food processor and pulse until combined. Pour over the top of the filling and press down lightly. Cook for one hour or until apples are cooked through.