Variations & Tips
For a different flavor profile, try adding sliced bell peppers or mushrooms to the packets. You can also substitute the sirloin steak with chicken breast or salmon for a lighter option. If you prefer a spicier kick, add a pinch of red pepper flakes or a dash of hot sauce to the marinade. For outdoor enthusiasts, these packets can also be cooked on a grill over medium heat for about 20-25 minutes.