Ingredients
2 sweet potatoes, peeled and cut into 1-inch chunks
1 medium red onion, quartered
2 tablespoons olive oil
Coarse salt and ground pepper
1 package (10 ounces) frozen cut green beans, thawed
1/3 cup walnuts
1 cup plain low-fat yogurt
2 tablespoons white-wine vinegar
1 garlic clove, crushed through a garlic press
1 head (10 ounces) red-leaf lettuce, torn into bite-size pieces
Preparation
Preheat oven to 450 degrees. On a large rimmed baking sheet, toss together sweet potatoes, onion, and oil; season with salt and pepper. Roast until sweet potatoes are tender, about 20 minutes.
Add green beans and walnuts to sheet; toss. Roast until green beans are tender, about 5 minutes.
Meanwhile, in a small bowl, whisk together yogurt, vinegar, and garlic; season dressing with salt and pepper. Top lettuce with roasted vegetable mixture; drizzle with dressing.