Decades ago when I lived in Edinburgh for a bit I enjoyed Delia Smith's cooking show on TV so bought the books. Today I've referred to her fruit crumble recipe.

The apples were stewed up a while ago and frozen. They came from the tree at the property we used to rent out and have now sold.

Book cover: Delia Smith's Cookery Course Part Three.
Basic crumble topping ingredients.
Crumble topping instructions and alternates and recipe for Spiced apple and raisin crumble
Apple crumble, browned, out of the oven and ready to eat.