Roast Vegetable Tuna Salad

• 2 (5-ounce) cans white tuna packed in oil, undrained
• 1/2 pound butternut squash, peeled and cut into 1-inch cubes
• 1/2 pound small red potatoes, halved
• 7 ounces radishes, halved
• 6 tablespoons olive oil
• 1 1/2 teaspoons kosher salt
• 3/4 teaspoon freshly ground black pepper
• 1/2 pound green beans, trimmed
• 3 plum tomatoes, quartered
• 1 small garlic clove, grated
• 1 tablespoon red wine vinegar
• 1 tablespoon drained capers
• 1 tablespoon prepared horseradish
• 1/2 tablespoon whole-grain mustard
• 2 bunches watercress

1. Preheat oven to 425u0b0. Drain tuna, reserving oil; set aside.
2. Combine squash, potatoes, radishes, 1 1/2 tablespoons oil, 1/2 teaspoon salt, and 1/4 teaspoon pepper in a large bowl; toss to coat. Spread squash mixture in a single layer on a rimmed baking sheet. Add green beans, tomatoes, 1/2 tablespoon oil, 1/2 teaspoon salt, and 1/4 teaspoon pepper to bowl; toss to coat. Arrange tomatoes on a second rimmed baking sheet; reserve green beans. Roast squash mixture and tomatoes 15 minutes. Add green beans to pan with tomatoes; stir squash mixture. Roast 15 more minutes or until beans are crisp-tender and potatoes are cooked through. Let vegetables cool to room temperature.
3. Whisk together garlic and next 4 ingredients in a medium bowl. Combine 1/4 cup reserved oil from canned tuna with remaining 1/4 cup olive oil. Add oil to vinegar mixture in a slow, steady stream, whisking constantly until smooth. Sprinkle with remaining 1/2 teaspoon salt and remaining 1/4 teaspoon pepper.
4. Combine watercress and half of the vinaigrette in a large bowl; toss to coat. Divide watercress mixture evenly among 4 plates. Top evenly with roasted vegetables. Flake tuna evenly over vegetables; drizzle evenly with remaining vinaigrette.

butternut squash, red potatoes, radishes, olive oil, kosher salt, freshly ground black pepper, green beans, tomatoes, garlic, red wine vinegar, capers, horseradish, wholegrain mustard, bunches

Taken from www.myrecipes.com/recipe/roast-vegetable-tuna-salad (may not work)