1. Combine first 4 ingredients in a large bowl. Shape turkey mixture into 4 (1/2-inch-thick) patties. Combine teriyaki sauce and 1 tablespoon water in a small bowl.
2. Heat a large nonstick skillet over medium-high heat. Coat pan with cooking spray. Add onion to pan; cover and cook 7 minutes or until golden brown, stirring frequently. Stir in 1 tablespoon teriyaki mixture. Remove onion from pan; keep warm. Reduce heat to medium.
3. Coat pan with cooking spray. Add oil to pan. Add patties, and cook 5 minutes. Add remaining 3 tablespoons teriyaki mixture to pan. Carefully turn patties over, and cook 2 minutes or until done.
4. Place 1 patty on bottom half of each bun; top each with 1/4 cup onion mixture, 1 tomato slice, and 1 lettuce leaf. Top with remaining bun halves.
Young Chefs can:
Add measured garlic powder and ginger to turkey
Place buns on plates
Older Chefs can:
Help shape patties
Top burgers with tomato, lettuce, and remaining bun half