simple & in-season winter warmer croque madame while it may look like a sandwich the croque madame is a knife and fork breaking the yolk first to get gooey goodness in every bite! melt 2 tablespoons butter in a small saucepan over medium mustard on half of the bread slices and top with ham evenly divide 12 cup cheese among remaining bread slices toasted and cheese has melted evenly spread half of the bechamel over ham to make sandwiches top each sandwich with a fried egg and serve immediately about 8 minutes or until shallots are just if desired or until thickened melt remaining butter over medium heat and serve immediately