Filling: Mix desired amount of frozen blueberries with one or two diced apples (it depends how much you’re making). Add about half a cup of flour (so it’s not super runny), and 1/4 cup of sugar, a sprinkle of cinnamon and nutmeg.
Topping: 1/2 a cup of flour, 1/2 a cup of oatmeal, 1/4 cup of sugar, 1/2 cup of melted margarine or butter. Mix it up.
Put the filling in a baking dish and spread the topping over it. Bake at 350F until topping is golden brown and filling is bubbly. Enjoy!
(PS, this is really yummy.)