Croque Madame – – butter, all purpose flour, milk (heated), salt, black pepper (finely ground), nutmeg, cayenne pepper, cheese (Gruyere, grated), Parmesan cheese (grated), bread (sourdough, thinly sliced), Dijon mustard, ham (Virginia, sliced very thin), eggs, Preheat the oven to 400 degrees F. ; In a small saucepan, melt the butter over low heat, then add the flour. Stir constantly with a wooden spoon to cook the flour for about 3 to 4 minutes, but do not brown it. Slowly add the hot milk to the mixture. Now whisk over the heat constantly to incorporate. The sauce will thicken. Remove from the heat and add the salt, pepper, nutmeg, cayenne, Gruyere and Parmesan. Stir to incorporate and set aside.
; Place the bread on a sheet pan and place in the oven to toast for about five minutes. Turn and toast the other side another few minutes.
Remove from the oven and assemble the sandwich.
; First spread the Dijon on each piece of toast, then add two slices of ham. Spoon the cheese sauce onto the ham and spread evenly. Sprinkle with a little reserved Gruyere. ; Place the assembled sandwiches into the oven and bake for about five minutes. Then, turn the oven to broil and brown under the broiler for another three to five minutes. The topping will bubbly. ; Fry two eggs in a skillet and top the open faced sandwich.; –