A bit work intensive, but very pretty served in a white gratin dish. I used large Sea Scallops and made in the early morning. It was great having such a lovely dish tucked away in the fridge ready to pop in the oven. I substituted Fontina Cheese because I did not have Gruyere. The Fontina has a bit of a nutty taste, and it melts so beautifully...one of my favorite cheeses.http://cooking.nytimes.com/recipes/1017099-ina-gartens-make-ahead-coquilles-st-jacques