How to Make It
In a small bowl, blend the butter with the Gorgonzola cheese, minced shallot, chopped tarragon and Worcestershire sauce. Season the blue cheese butter with salt and pepper.
Light a grill or preheat a grill pan. Brush the flat iron steaks with canola oil and season with salt and pepper. Grill the steaks over high heat until they are lightly charred on the bottoms, about 4 minutes. Turn the steaks, brush with 1 tablespoon of the blue cheese butter and grill until medium-rare, 3 to 4 minutes more. Let the grilled steaks rest on a cutting board for 10 minutes. Thinly slice the steaks across the grain and serve with the remaining blue cheese butter on the side.