In a medium mixing bowl, whisk together the buffalo wing sauce, honey, crushed garlic, onion salt, ground sumac, lime juice, grated Parmesan cheese, and black pepper until well combined.

Place the buffalo steaks in a sealable plastic bag or shallow dish.

Pour the marinade over the steaks, ensuring they are evenly coated.

Seal the bag or cover the dish with plastic wrap and refrigerate for at least 4 hours, or overnight for best results.

When ready to cook, preheat your grill or grill pan to medium-high heat.

Remove the steaks from the marinade and discard any excess marinade.

Grill the steaks for about 4-6 minutes per side, or until desired doneness is reached, flipping only once.

Remove the steaks from the grill and let them rest for a few minutes before serving.