"These open-faced sandwiches with crisp asparagus, prosciutto and three layers of melted cheese are gooey and crunchy...."
INGREDIENTS
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12 thin asparagus spears
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1 tablespoon extra-virgin olive oil
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2 large shallots, thinly sliced
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Salt and freshly ground pepper, to taste
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2 large plum tomatoes, sliced lengthwise 1/4-inch thick
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Four 3/4-inch-thick slices of peasant or Pullman sandwich bread
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1/4 cup tapenade
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Four 1/8-inch-thick slices each of Italian fontina, fresh mozzarella and Gruyere cheese
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4 slices of prosciutto
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Aged balsamic vinegar, for drizzling