Apple Blueberry Crisp

4 cups sliced peeled tart apples
2 cups fresh or frozen blueberries
1/4 cup packed brown sugar
1/4 cup orange juice concentrate
2 T all purpose flour
1 tsp cinnamon
Topping:
1 cup old-fashioned oats
1/2 cup packed brown sugar
2 T flour
1/2 tsp cinnamon
1/3 C cold butter, cubed
Combine the first six ingredients. Transfer to a greased 9-in. square baking dish. For topping combine oats, brown sugar, flour and cinnamon. Cut in butter until mixture is crumbly: sprinkle over fruit. Bake 350 for 30-35 min. until topping is golden and fruit is tender. Serve warm with ice cream.. 8 servings.