Croque Madames (Challah Grilled Cheese with Smoked Salmon and Preserved Lemon) Recipe | James Beard

Ingredients

• 8 thin slices challah
• 6 ounces aged Emmentaler, Gruyère, or other Swiss cheese,
• thinly sliced
• 6 ounces smoked salmon, thinly sliced
• 1 scallion or few chives, thinly sliced
• 1 piece preserved lemon, finely chopped, or finely grated
• zest of 1 lemon
• Freshly ground black pepper and Kosher salt
• 4 tablespoons unsalted butter, at room temperature