Croque Madame

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Details

13 Ingredients

• 1/4 cup grated Parmigiano-Reggiano cheese
• 2 Tbs. plus 2 tsp. unsalted butter
• 2 Tbs. all-purpose flour
• 3/4 cup milk
• 1 cup grated Gruyère cheese
• 1/2 tsp. kosher salt
• Pinch of freshly grated nutmeg
• 8 eggs
• 4 slices country-style sourdough bread, toasted
• 6 oz. sliced smoked ham
• 1 Tbs. sliced fresh chives
• 3 tsp. Dijon mustard
• 1 Tbs. all-purpose flour