Parmesan Buffalo Burgers With Balsamic Ketchup

• Burgers:
• 1 tablespoon extra-virgin olive oil
• 1/4 teaspoon kosher salt
• 1/4 teaspoon freshly ground black pepper
• 1 pound lean ground buffalo or bison
• 1 ounce grated Parmigiano-Reggiano cheese (about 1/4 cup)
• Cooking spray
• 4 (1 1/2-ounce) hamburger buns, toasted
• 1 cup baby arugula
• 4 thin slices red onion

1. Preheat grill to high heat.
2. Combine first 5 ingredients in a bowl. Divide buffalo mixture into 4 equal portions, gently shaping each into a 1/2-inch-thick patty. Press a nickel-sized indentation in the center of each patty.
3. Place patties on grill rack coated with cooking spray; grill 3 minutes on each side or until desired degree of doneness.
4. Place bottom bun halves on plates. Top each with 1/4 cup arugula, 1 onion slice, and 1 patty. Spread 1 tablespoon ketchup on top half of each bun; place on top of burgers.

burgers, extravirgin olive oil, kosher salt, freshly ground black pepper, bison, cheese, cooking spray, buns, baby arugula, thin slices red onion

Taken from www.myrecipes.com/recipe/parmesan-buffalo-burgers (may not work)