Croque Madame Sandwich

By C R Henning

5.0 / 5

15min

25min

See on AllRecipes

4 tablespoons salted butter softened, divided
1 ½ tablespoons all-purpose flour
1 cup milk
2 ounces grated Gruyere cheese
¼ teaspoon salt or to taste
¼ teaspoon ground black pepper or to taste
⅛ teaspoon ground nutmeg
4 slices white bread lightly toasted
2 teaspoons Dijon mustard
2 thin slices Black Forest ham
2 large eggs
1 tablespoon water
1 teaspoon chopped fresh dill or to taste