Ingredients
- ¼ cup (½ stick) unsalted butter
- ¼ cup all-purpose flour
- 1½ cups whole milk
- 2 tablespoons whole grain mustard
- ½ teaspoon freshly grated nutmeg or ¼ ground nutmeg
- Kosher salt
- 8 slices ½”-thick country-style bread
- 6 oz. ham, preferably Paris ham (about 8 slices)
- 3 oz. Gruyère, grated (about 1½ cups)
- 1 teaspoon herbes de Provence
Personal Notes
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