6 tablespoons chilled butter, cut into small pieces
2/3 cup low-fat buttermilk
1/2 teaspoon grated orange rind
2 teaspoons sugar
Instructions
Preheat oven to 400 degrees F.
To prepare filling, lightly spoon 1/4 cup whole wheat flour into a dry measuring cup, and level with a knife. Combine 1/4 cup whole wheat flour with the next 4 ingredients (1/4 cup flour through juice) in a 13 x 9-inch baking dish coated with cooking spray. Let stand 10 minutes.
To prepare topping, lightly spoon all-purpose flour and 1/2 cup whole wheat flour into dry measuring cups, and level with a knife. Combine the floura and the next 4 ingredients (flours through salt) in a bowl; cut in butter with a pastry blender or 2 knives until mixture resembles coarse meal. Add buttermilk and rind, stirring just until moist. Drop dough onto fruit mixture to form 12 mounds; sprinkle with 2 teaspoons sugar.
Bake at 400 degrees for 35 minutes or until bubbly. Let stand 10 minutes before serving.