Arrange the steak in a shallow dish or resealable plastic container. Pour in 1 cup of the Steakhouse Marinade and turn meat until evenly coated. Cover and marinate in the fridge for 30 minutes, or longer for more flavor. When the meat is ready discard any unused marinade.
For the butter: in a medium-size mixing bowl, combine the bleu cheese, butter and chives; stir until combined. Refrigerate until ready to serve.
Prepare a grill for direct cooking over medium-high heat.