Prepare Multi-Grain Medley according to package directions, substituting broth for water. Cool.
In a large bowl whisk together olive oil, lemon juice, shallots and mustard. Fold in Multi-Grain Medley and remaining ingredients. Season with salt and pepper to taste. If desired, top with feta cheese.
Substitute 1/4 cup of your favorite vinaigrette for the oil, juice, shallots and mustard.