Ingredients

  • 1/2 recipe Pizza Dough (page 572)
  • Flour as needed
  • 3 tablespoons extra virgin olive oil, plus more as needed
  • 1 1/2 pounds onions, about 3 large or 4 or 5 medium, thinly sliced
  • Salt and black pepper to taste
  • 1 teaspoon fresh thyme leaves or 1/2 teaspoon dried
  • 6 to 10 anchovies, optional
  • About 12 Nicoise or other good-quality black olives, pitted and cut in half, optional
  • 6 to 8 thin slices tomato, optional

Method

  • Preheat the oven to 450F, with a pizza stone in place if you have one.
  • Knead the dough lightly and place it on a lightly floured surface; sprinkle it with a little more flour and cover it with plastic wrap or a towel.
  • Let it rest while the oven heats and you cook the onions.
  • Put the olive oil in a large skillet over medium high heat and add the onions and some salt and pepper.
  • Cook, stirring frequently, until the onions give up their liquid and become quite soft, at least 15 minutes; do not allow them to brown.
  • When they are cooked, turn off the heat and stir in the thyme.
  • Pat or roll out the dough as thinly as possible, to a diameter of about 12 inches, using more flour or oil as necessary.
  • The process will be easier if you let the dough rest between rollings.
  • If you have a pizza stone in your oven, place the dough on a floured peel or long-handled board; if not, lay the dough on a baking sheet brushed lightly with olive oil.
  • Let the dough rest for 15 to 30 minutes, or until it begins to puff ever so slightly.
  • Spread the dough with onions and then decorate, if you like, with anchovies, olives, and tomato.
  • Bake until nicely crisp, 15 minutes or more; if the tart is browning unevenly, rotate it back to front about halfway through the cooking time.
  • Serve hot or at room temperature.
  • Omit the tomatoes and olives.
  • In step 2, stir the anchovies into the cooked onions and cook for 5 minutes.
  • Stir a 6-ounce can of tomato paste into the onions and cook for a few more minutes over low heat.
  • Season to taste.
  • Drizzle the rolled-out dough with 2 tablespoons olive oil and bake for 10 to 12 minutes, or until the bottom begins to turn pale golden.
  • Spread the partially baked dough with 1 cup plain bread crumbs, preferably fresh, then spread with the onion mixture.
  • Return to the oven and bake for 15 to 20 minutes more, until the bottom is dark golden but not burned and the top is a richly colored caramel.
  • Remove and allow to cool for a few minutes before cutting; best served hot or warm.