Ingredients for 12 servings:
1. 2 cups blueberries
2. 2 cups raspberries
3. 2 cups marionberries
4. 5 tablespoons white sugar (if your berries are on the sour side add a little more)
5. 2 tablespoons flour
6. 1 tablespoon fresh lemon juice
7. 1 cup flour
8. 1 cup rolled oats
9. 3/4 cup brown sugar
10. 1 1/2 teaspoons cinnamon
11. 1/2 cup butter
12. 1/2 cup chopped nuts

Directions:
1. Preheat oven to 350.
2. Mix the berries, 5 t white sugar, lemon juice, and 2 T flour in a large bowl and set aside.
3. Mix remaining flour, oats, brown sugar, and cinnamon and then cut in butter till crumbly. Then add nuts if desired.
4. Sprinkle 1/2 of this mixture in a 9 by 13 and bake for about 15 minutes.
5. Remove from oven and distribute berry mixture evenly over the crust. Sprinkle on remaining crumbles and bake for about another 30 minutes or till bubbly.
6. Remove and serve hot or cold with whipped cream or icecream.

Enjoy your meal!