My Favorite Grilled Cheese Sandwich

On soup and sandwich night, my mom used to make these in a hinged electric grill, which squished the grilled sandwich perfectly. The sandwich takes on many different characters depending on the cheese you use: an Oregon Tillamook cheddar, a Vermont raw cheddar, a mild Wisconsin Colby, or perhaps the English Double Gloucester. Vary the filling with a bit of crumbled goat cheese, cooked bacon strips, fresh tomato slices, sweet hot mustard, roasted canned or fresh green chile strips, sautéed m