Step 1 : Introduction to the question "This pudding originated during World War II and consisted of a fruit base with a crumbly flour, fat and butter mix topping. What is the more common name for this English favourite?"
...The crumble became popular during the war period due to the strict rationing of ingredients. The most popular fruits used were either rhubarb or apple. Meat, vegetables and a sauce were also used for a very tasty savoury version. It is very much like the fruit cobbler served in America but with a crumblier topping.