1/2 cup packed light brown sugar
1 tablespoon cornstarch
1/4 teaspoon ground cinnamon
1 1/2 cups cranberries , fresh or frozen, thawed, chopped (see Tip)
1 1/2 cups finely chopped peeled tart apple , such as Granny Smith (about 1 large)
1/2 cup cranberry juice cocktail , orange juice or apple juice
1 cup all-purpose flour
1/2 cup whole-wheat flour
1 teaspoon baking powder
1/4 teaspoon salt
1/8 teaspoon baking soda
1/4 cup canola oil
3 tablespoons butter , slightly softened
3/4 teaspoon freshly grated lemon zest
3/4 cup granulated sugar, plus 1 tablespoon for sprinkling
1 large egg
3/4 cup low-fat milk
2 teaspoons vanilla extract