Preheat oven to 375 degrees F. In a 9-inch pie plate, toss blueberries with sugar. In a small bowl, combine oatmeal and butter until mixture forms coarse crumbs; sprinkle over blueberries. Bake until mixture bubbles around the edge and topping is light brown, 30 to 35 minutes.

Recipe Courtesy of The North American Blueberry Council.