all-purpose flour • granulated sugar • cinnamon • unsalted butter, softened and diced • heaping tablespoon all-purpose flour • ground cinnamon • butter, softened and diced • Heavy cream, to serve(optional) • apples, peeled, cored, and diced into ¾ inches(2cm) pieces • heaping tablespoon light brown sugar • inch(23cm) ovenproof dish, about 3 inch(7.5cm) deep