To prepare the filling, preheat oven to 375 degrees. Place the butter in an
8 x 8-inch square glass baking dish (no substitutes), and melt the butter in
the microwave. In a mixing bowl, combine lemon juice and blueberries. Add the
sugar and mix well. Add the blueberry mixture to the baking dish with the melted
butter. Do not stir.
Make the topping by combining all of the topping ingredients in a small bowl.
Pour this mixture over the blueberries and bake 45 minutes, or until brown.
This recipe is also good for apples, blackberries, and peaches.
