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Ingredients

• 2 (6-ounce) cans water-packed tuna, drained
• 1 Kirby cucumber, seeded and finely diced (3/4 cup)
• 3 tablespoons extra-virgin olive oil, plus a drizzle
• 3 tablespoons whole-grain mustard
• 2 scallions (white and green parts), thinly sliced
• 1 1/2 tablespoons chopped fresh dill leaves
• 1 1/2 teaspoons finely grated lemon zest from 1 lemon
• Kosher salt
• Freshly ground black pepper
• 8 slices nine-grain bread
• 1 Hass avocado, halved, seeded, and sliced
• 1 1/2 cup mesclun salad, or other lettuce
• 2 large tomatoes

Description

Food Network