Ingredients
- ¼ cup extra-virgin olive oil, plus more for drizzling
- 1 large yellow onion, diced small (2 ½ cups)
- Coarse salt and ground pepper
- 2 garlic cloves, minced
- Red-pepper flakes (optional)
- 3 pounds very ripe tomatoes, cored and coarsely chopped
- 6 ounces day-old crusty bread, thick crusts removed, torn into 1-inch pieces (4 cups)
- ¼ cup fresh basil leaves, torn if large
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