Chop Scallion (1/2 cup) and set aside.
Chop White Onion (1/2 cup) and set aside.
Combine Soy Sauce (2 cup) and chopped green onions in a large bowl.
Add in Brown Sugar (1 3/4 cup).
Pour in Sesame Oil (1 1/2 cup) and Garlic (1/4 clove).
Finally add in chopped white onions.
Whisk ingredients together well.
Gather vegetables for grilling. Thread ingredients on soaked wood or metal skewers.
Brush marinade over vegetables.
Place on the grill at medium heat. Grill to desired doneness, 2-4 minutes on each side.