Optional toppings: lettuce leaves and slices of peaches, red onion and tomatoes
6 multigrain hamburger buns, split and toasted
1/3 cup fat-free mayonnaise
1-1/2 pounds lean ground turkey
1/4 tsp. salt
1/2 tsp. pepper
1/4 cup chopped red onion
4 tsp. reduced-sodium teriyaki sauce, divided
1/2 tsp. minced fresh gingerroot
2 small peaches, peeled and chopped
1-1/2 tsp. canola oil