Pizza Ladière From The Global Pantry Cookbook

Name: Pizza-Ladière From 'The Global Pantry Cookbook'
Ingredients: 1 1/4 cups room temperature water; 1 teaspoon instant active dry yeast; 3 1/4 cups bread flour (about 15 ounces); 1/2 cup plus 1 tablespoon extra-virgin olive oil; 2 teaspoons kosher salt; 4 1/2 pounds yellow or white onions (not Vidalia or “sweet” onions); 3 tablespoons unsalted butter; 24 anchovy filets in oil; 18 pitted oil-cured black olives or pitted Kalamata olives, halved