Preheat oven to 375 degrees. Put the apples in a 9x13x2 inch Pyrex casserole dish.
Sprinkle the lemon juice over the apples. Sprinkle the cut vanilla bean, or extract over the top of the apples. Stir the mixture around a bit with a spoon.
Combine maple syrup, cinnamon, and quinoa (or gluten-free oatmeal) in a bowl. Cut in coconut oil. Sprinkle mixture over apples. Bake 45 minutes or until topping looks crisp.