This rather dull-looking pie holds a decadent secret. You shouldn’t judge a book by its cover and neither, my friends, should you ever judge a pie by its exterior. Usually at this time of year, when stone fruit is in abundance, I’m putting together numerous, fast ‘open tarts’ but this one is perfect if you have a wee bit of time on your hands. Sumptuously nutty, creamy and full of tangy stone fruit, this sweet creation from the Basque region, which spans the French-Spanish border, is well worth the little extra effort it takes to assemble. Photography by Jani Shephered; Gatherum Collectif.