Enjoy the mouthwatering flavors of Buffalo Trail bison burgers, a dish that marries the richness of ground bison with a tempting combination of spices. 

Season 2 1/2 pounds of ground bison with salt, black pepper, dry mustard, onion powder, garlic powder, sliced garlic, and ground coriander. Add more dried thyme and Worcestershire sauce, and combine all the ingredients in a bowl.

Next, divide the seasoned meat into eight equal portions and shape them into patties. Place the patties on a plate lined with wax paper and refrigerate for at least 2 hours.

Preheat your barbecue to 500 F. Brush the top side of the burgers with sunflower oil, and place them onto the grill.

Grill the burgers, keeping the lid closed, for 4 minutes. Flip and cook for three more minutes. Continue flipping and cooking until done according to preference. 

This recipe will yield eight mouthwatering bison burger patties. Preparation time is approximately 25 minutes, with an additional 2 hours of chilling time. The cook time ranges between 7 to 8 minutes, resulting in perfectly grilled burgers bursting with flavor.