- 1 crusty baguette, ends trimmed off
- Olive oil (for drizzling)
- 1 garlic clove, smashed
- 4 jarred anchovy fillets
- 1/4 cup thinly sliced onion
- 1 tablespoon red wine vinegar
- 1/4 teaspoon salt, plus more
- 1/4 teaspoon freshly ground black pepper, plus more
- 1 (6-ounce) jar tuna fillets in olive oil, drained, flaked
- 1/4 cup fresh parsley leaves
- 2 hard-boiled eggs, peeled, sliced
- 2 tablespoons pitted and halved Nicoise olives
- 1 medium ripe tomato, cored, thinly sliced
- Cut baguette in half crosswise with a serrated knife, then split each half lengthwise. Drizzle cut sides of bread with oil and rub with garlic. Arrange 2 anchovies on top half of each baguette.
- Toss onion and vinegar in a medium bowl and season with 1/4 tsp. each salt and pepper. Let stand 5 minutes. Add tuna and parsley and toss gently to combine. Taste and adjust seasoning. Pile tuna mixture on bottom half of each baguette. Top tuna mixture with eggs and olives.
- Arrange tomato slices on top of anchovies and close sandwiches. Wrap sandwiches tightly in foil and place a heavy pot or skillet on top. Add a few heavy objects such as cans to weigh down pot and press down on sandwiches. Let sit at room temperature at least 40 minutes and up to 1 hour. Unwrap, slice each sandwich in half crosswise (if desired), and serve.