Blackberry crumble is a baked dessert made with blackberries. Chopped blackberries are baked with a mixture of sugar, flour, butter and salt sprinkled over them. The berries may be seasoned with sugar sprinklings and lemon juice before the flour mixture is sprinkled over them. The fruit dessert may be topped with whipped cream, ice-cream, or a dessert sauce just before serving. Blackberry crumble may be served fresh from the oven or chilled.