Muffin Tin Breakfast Croque Madame Toastie Cups

Bahan-bahan (6 porsi)

• 1 1/2 tbsp unsalted butter
• 1 1/2 tbsp flour
• 1 1/4 cups milk ((full fat works best, though low fat does work))
• 1/3 cup grated gruyere cheese ((or tasty or cheddar), plus extra for sprinkling)
• 2 tsp Dijon mustard
• 1/4 tsp freshly ground nutmeg
• 1/4 tsp salt
• Black pepper
• 6 large slices of fresh white bread ((Notes 1 and 2))
• 2 tbsp melted butter ((salted or unsalted))
• 6 eggs
• 100 g / 3 oz leg ham
• Fresh parsley (, finely chopped)
• Freshly ground nutmeg