Combine oil, 2 tsp parsley and garlic. Salt and pepper the steaks generously. Add steaks and oil mixture to a Ziploc back and marinate at least 30 minutes, up to 1 day.
Mix cream cheese, remaining parsley, blue cheese, shallots, jalapeno and vinegar until it forms a paste. Salt & Pepper to taste.
Heat grill to high. When grill is at 500, add the steaks. Cook for 5 minutes, turn over and add a dollop of blue cheese mixture to each steak. Cook for 5 minutes more until it reaches 130 degrees.
Recipe by Cook Eat Run at https://cookeatrun.com/2014/07/27/grilled-steaks-blue-cheese-chiles/