In a medium bowl, combine berries, sugar, cornstarch, and orange juice and mix well.
In another bowl, mix oats, brown sugar, flour, almonds, and salt. Use pastry cutter or two forks to cut in cold butter cubes until you have some pea sized clumps. You can use clean hands to do this as well.
Pour the berry mixture into your 8 inch skillet and then top with the oat mixture, spreading it evenly to the edges of the pan.
Bake for 42-45 minutes. I like to allow it to cool completely before serving, but it also tastes great served warm with vanilla ice cream.