We made this last night and quite enjoyed it. Instead of using shallots, we used onion. Did not have gruyere cheese, so used smoked gouda and ti gave the dish another depth of flavor. Added more lemon juice than specified, along with lemon zest, as we love anything lemony. We are always looking for new chicken recipes, which don't add tons of fat. This felt indulgent, while being still being pretty healthy. This recipe seems pretty versatile. We used asparagus, as it is on sale this week, but won't be using it when it is expensive. Muschrooms and artichoke hearts seem like they would work well, in place of asparagus.