Preheat oven to 350 degrees.
In a large bowl, combine apples, berries and sugar. Place into a 9 x 13-inch pan.
In a large bowl, combine brown sugar, flour, oats, walnuts, butter and cinnamon and blend together. Sprinkle over top of fruit.
Bake at 350 degrees for approximately 1 hour, or until top is brown.
SERVINGS: 12 – 15