Chef Eric Greenspan, author of The Great Grilled Cheese Book: Grown-up Recipes for a Childhood Classic, walks you through the do's and don'ts of making grilled cheese sandwiches. Ready thy tomato soup for dunking.
Tartines can be considered dressed-up, open-faced sandwiches, but I love them for their versatility and beautiful presentation. These have autumn written all over them, and the variety of mushrooms adds to the appeal.