The crumble:
300g flour150g sugar
120g butter (nearly melted)
mix loosely together by hand
The fruit bit:
Two largish bramley apples cut up into quite small slices.Some frozen fruits-of-the-forest fruit (Tescos is good, sorry for the advert) so you have blackberries, redcurrants, raspberries, black currants etc
Put fruit in bottom of large baking dish - do not cook the fruit beforehand.
Sprinkle crumble on top.
190C oven for 40mins
PS I am reliably informed that Waitrose Summer Fruits and Waitrose Black Forest Fruits are suitable frozen fruit alternatives :-)