Steak Marinate: Combining the soy sauce, peach juice, oil, dried onion flakes, garlic and fresh ground black pepper in a large bowl and whisk to combine. Add steak, tossing to coat. Cover and refrigerate for 1-8 hours.

Assemble: If using wooden skewers, soak them in water for 30 minutes. Thread the steak and chopped vegetables alternately onto the wooden skewers, keeping a little space between each.

Grill: Clean grill grates and oil. Heat to medium-high. Grill kabobs for just a few minutes on each side (8-10 minutes maximum), according to how well done you like your steak. Allow the kebabs to rest for 5 minutes before serving.