Croque Madame Vs Croque Monsieur - The Flavor Dance

Ingredients

• 4 slices sourdough
• 3 tbsp unsalted butter
• 2 tbsp Dijon mustard
• 2 cups shredded gruyere or comte (swiss cheese also works)
• 1 lb bistro ham, sliced (your favorite deli ham will work)
• 4 each eggs
• 2 cups bechamel
• 2 cups whole milk
• 50 grams AP flour
• 50 grams butter
• pinch of nutmeg
• salt to taste