Blueberry Brown Betty

Bahan-bahan (8 porsi)

• softened unsalted butter, for greasing
• 6 cups blueberries ((see note))
• 1/2 cup + 3 tablespoons sugar
• juice of 1/2 a lemon
• pinch of kosher salt
• 4 cups lightly filled fresh bread crumbs ((see note))
• 8 tablespoons (1 stick) unsalted butter, melted
• vanilla ice cream or heavy cream, for serving