Step 1

Preheat the oven to 400°. Grease a 9x13 pan with butter. Place the blackberries and apples in a large bowl and sprinkle with the sugar, cinnamon, nutmeg, salt, and cornstarch. Stir to coat the fruit and set aside while assembling the crust and topping.

Step 2

Stir together the oats, flour, brown sugar, and butter. Pour the fruit into the greased pan and sprinkle the oat mixture on top of the fruit.

Step 3

Bake for 30 minutes, until the crust has browned and the fruit mixture is bubbling. Serve warm with vanilla ice cream or whipped cream. Enjoy!