Only not all in one sitting, because it was kind of giant. It's a sablé (basically a shortbread cookie) with lumps of caramelly chocolate. Or chocolatey caramel. Or chocolate and caramel? Anyway, it was delicious. The boulangeries and patisseries are probably at the top of the list of things I'm going to miss about living here.
Unrelated: someone should convince me I don't need a floppy straw hat from H&M. I already bought a dress and a giant cookie today.