Spinach and Feta Frittata

Place potatoes in microwave-safe medium bowl; cover with vented plastic wrap and cook in microwave on High 3 minutes or until tender. Place spinach and 1 tablespoon water in microwave-safe large bowl; cover with vented plastic wrap and cook in microwave on High 2 minutes or until wilted. Drain spinach well. Meanwhile, preheat oven to 450 degrees F. In large bowl, whisk eggs, egg whites, and dill until blended. Stir in potatoes, spinach, feta, and 1/2 teaspoon salt. In 10-inch nonstick skillet with oven-safe handle (if not oven-safe, wrap handle in double thickness of foil for baking in oven later), heat oil on medium 1 minute. Add egg mixture and cook 5 to 6 minutes or until just beginning to set around edge. Place skillet in oven and bake 10 to 12 minutes or until set in center. Serve with fruit salad, if you like.