Combine parsley, cilantro, oregano, garlic, red wine vinegar, salt, and pepper in a medium bowl. Whisk in olive oil in a slow stream. Set aside.
For medium-well hamburger: Place frozen Chop House Steak Burger Patties in a preheated pan over medium-high heat and cook 6 minutes. Turn patties over and cook for 3 minutes or until internal temperature reaches 160° F.
Toast hamburger buns if desired. Spread chimichurri sauce on bottom half of hamburger buns. Top with patty.
Place cheese slices on a nonstick skillet over medium heat. Turn slices over when cheese begins to sear and melt. Place over hamburger patties.
Cover with hamburger buns top halves and serve immediately.