I tried to buy blackberries today to put them in a crumble with some apples, but they are non existent in Tescos atm. I'm going to use defrosted cherries instead but although I bake lots I'm not really experienced in crumbles & am not sure what fruit is good or not. There's a damson tree nearby, would they be good in the autumn?
Inspire me, what's your favourite crumble?