1 1/2 cups fresh or frozen blueberries (if frozen, not thawed)
5 medium fresh nectarines or peaches, frozen peaches (if frozen, not thawed; sliced about 1/2 inch thick)
2 tablespoons minced crystallized ginger (optional)
1 1/2 tablespoons cornstarch
1/3 cup brown sugar (packed) (or 1/2 cup, depending on sweetness of berries)
1/3 cup whole wheat pastry flour
1/2 cup rolled oats
1/4 cup raw unsalted sunflower seeds
1/4 cup brown sugar, (packed)
1 teaspoon ground cinnamon
2 tablespoons pure maple syrup
2 tablespoons vegetable oil