Steaks with Sauce Bordelaise

Preparation Bring broth to simmer in heavy small saucepan over medium-high heat. Add marrow; reduce heat to low and poach gently until marrow looks translucent and gray, about 2 minutes. Using slotted spoon, transfer marrow to small plate. Refrigerate marrow poaching liquid. Refrigerate marrow until cold and firm, about 45 minutes. Dice marrow finely; cover and chill. (Can be made 1 day ahead. Keep marrow and poaching liquid chilled.) Melt 1 tablespoon butter in heavy medium skillet over medium-high heat. Add shallot and sauté until translucent, about 3 minutes. Add wine and boil until reduced to scant 1/2 cup, about 5 minutes. Transfer reduction to small bowl. Melt 2 tablespoons butter in heavy large skillet over high heat. Sprinkle steaks lightly with salt and pepper. Add to skillet and sear until cooked to desired doneness, about 3 minutes per side for medium-rare. Transfer steaks to plates. Add wine reduction to skillet and bring to boil, scraping up browned bits. Reduce heat to medium. Whisk in remaining 3 tablespoons butter, 1 tablespoon at a time. Add 1/4 cup reserved marrow poaching liquid and diced marrow. Cook until marrow melts and sauce is smooth, whisking constantly, about 2 minutes. Thin sauce with more poaching liquid by tablespoonfuls, if desired. Season sauce with salt and pepper. Spoon sauce over steaks. Sprinkle with parsley.

Preparation Bring broth to simmer in heavy small saucepan over medium-high heat. Add marrow; reduce heat to low and poach gently until marrow looks translucent and gray, about 2 minutes. Using slotted spoon, transfer marrow to small plate. Refrigerate marrow poaching liquid. Refrigerate marrow until cold and firm, about 45 minutes. Dice marrow finely; cover and chill. (Can be made 1 day ahead. Keep marrow and poaching liquid chilled.) Melt 1 tablespoon butter in heavy medium skillet over medium-high heat. Add shallot and sauté until translucent, about 3 minutes. Add wine and boil until reduced to scant 1/2 cup, about 5 minutes. Transfer reduction to small bowl. Melt 2 tablespoons butter in heavy large skillet over high heat. Sprinkle steaks lightly with salt and pepper. Add to skillet and sear until cooked to desired doneness, about 3 minutes per side for medium-rare. Transfer steaks to plates. Add wine reduction to skillet and bring to boil, scraping up browned bits. Reduce heat to medium. Whisk in remaining 3 tablespoons butter, 1 tablespoon at a time. Add 1/4 cup reserved marrow poaching liquid and diced marrow. Cook until marrow melts and sauce is smooth, whisking constantly, about 2 minutes. Thin sauce with more poaching liquid by tablespoonfuls, if desired. Season sauce with salt and pepper. Spoon sauce over steaks. Sprinkle with parsley.