Apple and Walnut Cake

I got the idea for making this cake from a conflation of two things: the first was reading Anna del Conte’s recipe, in her Secrets from an Italian Kitchen, for an apple cake made with olive oil; the second was the reproachful remainder of a bottle of walnut oil bought to make some walnut dressing and then left on the shelf with seemingly no further purpose in life. So I thought I’d try making a cake