Recipe: Apple, rhubarb and ginger crumble

Winter arrived in Sydney this week with a bone-chilling shiver. Antipodeans don't like the cold. Not unless it's amber and comes in a schooner.So I was more than pleased when an invite to dinner this week promised a heart-warming offer of home-cooked pizza. Rather than bring an obligatory box of choccies, I took a couple of apples and a block of butter with me--the intent to rustle up a thank you