Whisk vinegar, shallot, and mustard in small bowl. Gradually whisk in oil. Pour over potatoes and toss to coat. Cool completely. Mix in green beans and parsley. Season to taste with salt and pepper.

Whisk vinegar, lemon juice, and honey in small bowl. Gradually whisk in oil ... Mix tomatoes, feta, basil, and green onions into orzo. Add vinaigrette; toss to coat. Season with salt and pepper.