6 grilled fontina sandwich with mushrooms and Recipes

unsalted butter, cremini mushrooms, trimmed and chopped, salt, black pepper, dry white wine, chilled italian fontina , rind discarded and cheese coarsely grated (2 cups), chopped fresh flat-leaf parsley, very thin slices firm white sandwich bread, white-truffle oil (optional)

butter, 2 melted, mushrooms , cut into thin slices, salt, fresh-ground black pepper, chopped fresh sage , or 1 1/4 tsp dried sage, a large round loaf of country-style bread , or other bread, fontina, grated (about 2 cups)

olive oil, minced fresh rosemary, very large portobello mushrooms, stemmed , dark gills removed, caps thinly sliced, thick slices country white bread (each about 3x6 inches), dijon mustard (optional), fontina cheese, thinly sliced, arugula or 1 bunch trimmed watercress

extra virgin olive oil, divided, red onion, thinly sliced, salt, fresh ground black pepper, white mushroom, sliced (about 3 cups, may use baby bella mushrooms if you like), italian parsley, chopped, sourdough bread (or a whole grain bread), dijon mustard, fontina cheese, grated (1/2 to 1 cup), unsalted butter, softened (or melted )