This mixed berry pie recipe combines a flaky crust with a crunchy, buttery crumble topping, filled with summer fruit — blackberries, raspberries, blueberries and strawberries.

This mixed-berry slab pie is made using a baking sheet rather than a traditional pie pan. It's like a giant Pop-Tart. You can eat it like a traditional pie, on a plate with ice cream or whipped cream, ...