Mixed Berry Whole Grain Coffee Cake Recipe

3 tablespoons butter
1 cup quick-cooking oats
1 1/4 cups all-purpose flour, divided
1/4 cup brown sugar
1 cup whole wheat flour
3/4 cup granulated sugar
1/4 cup vegetable oil
1 cup skim milk
1 tablespoon baking powder
1 teaspoon cinnamon
1/2 teaspoon salt
1 egg, slightly beten
1 (12-ounce) bag frozen, unsweetened mixed berries, thaw and drained, or 2 cups fresh berries
1/4 cup chopped walnuts

1. Preheat oven to 350F. Grease, or coat with cooking spray, a 9-inch round or square cake pan.
2. Mix btter and oats, 1/4 cup all-pupose flour and brown sugar in a small bowl with a fork or pastry cutter until crumbly.
3. Combine whole wheat flour, remaining all-purpose flour, sugar, oil, milk, baking powder, cinnamon, salt and egg in a large bowl. Beat mixture with whisk or mixer 1 to 2 minutes, until well blended. Stir in berries. Spead half the batter in pan and sprinkle half the oat mixture on top. Add remaining batter and sprinkle remaining oat mixture and walnuts on top. Bake 40 to 45 miniutes, until a toothpick inserted in the center somes out clean. Serve warm. Serves 12.