6 cups (1/2-inch) slices rhubarb (about 2 pounds) |
2 1/2 cups halved strawberries |
3/4 cup granulated sugar |
3 tablespoons cornstarch |
1 teaspoon grated orange rind |
1/2 teaspoon ground cinnamon |
cooking spray |
2/3 cup all-purpose flour (about 3 ounces) |
1/2 cup packed brown sugar |
1/2 cup regular oats |
1/4 teaspoon ground cinnamon |
dash of salt |
6 tablespoons chilled butter, cut into small pieces |