5 cups blackberries (1 1/2 pounds)
1/4 cup light brown sugar
1/4 teaspoon kosher salt
2 cups granola
4 tablespoons unsalted butter, softened
1. Heat oven to 350° F. In a medium bowl, toss together the blackberries, sugar, and salt. Transfer to a shallow 2-quart baking dish.
2. In another medium bowl, using your hands, mix the granola with the butter until large clumps form; scatter over the blackberries. Bake until the blackberries are bubbling, 20 to 30 minutes.