Although Herbes de Provence can be found in most grocery stores, it is easy to prepare your own mixture. The combinations can vary, but thyme and savory are generally used; rosemary is included for lamb preparations. Lavender adds a pleasantly pungent aroma.
This classic marinade pairs nicely with almost any meat, particularly shellfish and fish fillets. Don't marinate shellfish for longer than twenty minutes; the acid in the lemon juice will cook the flesh.
The dish can be largely assembled ahead: Leave off the last portion of cheese, cover the dish with plastic wrap (pressing it directly onto the surface to prevent a skin from forming), and refrigerate it for up to one day. Remove it 30 minutes before baking, sprinkle with the remaining cheese, and bake as instructed.