1Preheat oven to 350°F. Pierce skin and flesh of apples with fork. Place skin-side down in 13x9-inch baking dish. Set aside.
2Mix brown sugar, oats, butter and vanilla in medium bowl until well blended. Add spices; mix well. Stir in cranberries and walnuts. Fill core of each apple half with 1 to 2 tablespoons of the brown sugar mixture, spreading on top of apple. Pour cider into dish. Cover dish with foil.
3Bake 45 to 50 minutes or until apples are tender.