Instructions

  1. Preheat oven to 450°F.
  2. Snap off tips of beans at the stem end; place beans and nuts in single layers on two baking sheets.
  3. Drizzle with olive oil; sprinkle with salt and pepper.
  4. Toss to coat.
  5. Roast beans in lower half of oven 5 minutes; stir and roast 5 more minutes.
  6. In a large bowl; whisk vinegar, lemon juice, sugar, oregano, garlic, salt, and pepper.
  7. Drizzle in oil; add sliced onion.
  8. Toss roasted beans and walnuts in dressing, then transfer to a large serving platter or individual plates.
  9. Garnish beans with crumbled feta; serve warm or at room temperature.