When you’re cooking for two and neither of you are particularly picky eaters, you have the luxury of stretching the repertoire every now and then. I recommend these crepes, which are quite doable on a weeknight. The batter, made with white whole-wheat flour, needs only a 15-minute rest. The filling is no more than interesting mushrooms browned in a pan and topped with a sprinkling of grated Swiss and lots of fresh herbs.