Layer each slice with 1/4 cup arugula, 1 onion slice, 3 ounces turkey, 4 apple slices and 2 Tablespoons cheese. Place sandwiches on a baking sheet; broil 4 minutes or until cheese is bubbly.

apple, onion, and walnuts. Toss well to combine. Turkey salad can be served chilled or at room temperature in lettuce cups, on a sandwich, or with crackers as a snack. It all comes down to preference.