Grilled Chicken Salad Paninis

INGREDIENTS

• 3 cups diced cooked chicken or turkey (leftovers work great!)
• 6 Tbsp. Hellmann's® or Best Foods® Real Mayonnaise
• 2 Tbsp. finely chopped red onion
• 8 slices whole grain bread
• 4 ounces sliced cheddar cheese or American cheese
• 4 tsp. Dijon mustard