This is a wonderful dessert for fall, when both cranberries and apples are in season.
The fruits are quite compatible in flavor and color, and they help make any table look festive and inviting.
 

Ingredients
3 cups chopped peeled baking apples
2 cups fresh or frozen cranberries
1 cup sugar
3 tablespoons all-purpose flour

Topping1-1/2 cups quick-cooking oats
1/2 cup all-purpose flour
1/2 cup packed brown sugar
1/2 cup butter or margarine, melted
1/4 cup chopped pecans

Directions 
Combine apples, cranberries, sugar and flour. Pour into a greased 11-in. x 7-in. x 2-in. baking dish.
In a bowl, mix topping ingredients until crumbly; sprinkle over apple mixture. Bake at 350° for 50-55  minutes or until fruit is tender. Yield: 6-8 servings.

Source:  Taste of Home