2celery stalks with leavesfinely chopped (leaves torn)
Optional: chunks of feta cheese
1/3cupextra-virgin olive oil
Preheat oven to 400°F. In a large bowl, toss bread with olive oil, salt, and pepper. Spread evenly on a rimmed baking sheet and bake for 10 to 12 minutes, tossing once halfway through, until crisp and golden-brown.
Place bread back in bowl and add tomatoes, olives, onion, and celery (chopped stalks and torn leaves).
Prepare dressing by combing vinegar, garlic, horseradish, honey, Worcestershire sauce, celery seeds, pepper, and salt in a small bowl. Slowly stream in olive oil while continuously whisking until combined. Toss dressing with bread and tomato mixture and serve.
*If preparing ahead, wait to dress until 30 minutes prior to serving.