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