Ingredients

  • 1 small onion, sliced thin
  • 1/4 cup olive oil
  • 2 medium zucchini, halved lengthwise and cut crosswise into 1/4-inch-thick slices
  • 2 garlic cloves, minced
  • 6 plum tomatoes, peeled, seeded, and cut into 1/4-inch dice
  • 1 teaspoon fresh thyme leaves, chopped
  • 1/4 cup dry white wine
  • 1 loaf Italian or French bread about 3 1/2 inches in diameter, cut diagonally into 1/2-inch-thick slices (about 20)
  • 10 thin slices provolone cheese (about 1/4 pound), halved

Method

  • Preheat oven to 450F..
  • In a large heavy skillet cook onion in oil over moderate heat, stirring occasionally, until soft.
  • Add zucchini and garlic and cook, stirring, until zucchini is barely tender.
  • Add tomatoes and thyme and cook, stirring occasionally, about 2 minutes.
  • Add wine and salt and pepper to taste and simmer until liquid is reduced by about half, about 4 minutes.
  • Remove skillet from heat and cool mixture.
  • On a baking sheet toast bread in middle of oven until pale golden, about 4 minutes.
  • Mound about 2 tablespoons zucchini mixture on each toast and top with a half slice provolone.
  • Bake crostini in middle of oven until cheese is melted and golden.