Gluten free: Peanut Butter, Apple and Blackberry Crumble. A cold weather dish of sweet soft apples and  blackberries with a crunchy oaty topping flavoured with peanut butter And just like that summer is over.  The leaves on the trees are changing their colour scheme and suddenly the nighttime darkness is with us before we’ve even changed into our pyjamas and worked out our Netflix viewing schedule. Although I love sunny…