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1
Preheat oven to 200*F.
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2
Put a large ovenproof serving platter in the oven to warm while preparing sandwiches.
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3
In a shallow bowl, or pie pan, whisk together the eggs and milk until well blended.
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4
Dip one side of 6 of the bread slices briefly into the egg mixture.
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5
Sprinkle the eggy sides of the bread with half ot the parsley and half of the thyme.
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6
Set the slices egg side down on a piece of parchment paper or foil.
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7
Top the dry side of the bread with the prosciutto and cheese.
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8
Dip 1 side of the ramianing 6 slices of bread into the egg mixture and set on top of the sandwiches, egg side up.
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9
Sprinkle with remaining herbs.
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10
Melt 2 TBs of the butter in a large skillet over medium high heat and cook 2 or 3 sandwiches until golden brown on the bottom and the cheese begins to melt, 3 to 4 minutes.
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11
Turn the sandwiches and cook until the second side is golden brown, the cheese is melted and the sandwiches are warmed through, another 3 to 4 minutes, adding a bit of butter to the skillet if need be.
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12
Transfer the sandwiches to the warm platter and Keep warm in the oven while cooking the remaining sandwiches.
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13
Cut the sandwiches in half and serve, passing the whole grain mustard seperately.