Meat and Poultry Beef Steaks Flat Iron Steak Recipes Grilled Flat Iron Steak with Blue Cheese-Chive Butter 4.7 (285) 209 Reviews 12 Photos This grilled flat iron steak is something I made for a Valentine's Day dinner. It turned out delicious! The flavored butter is what makes this dish. Submitted by Kristin Updated on March 31, 2023 Save Rate Print Share Close Add Photo 12 12 12 12 Prep Time: 15 mins Cook Time: 10 mins Additional Time: 45 mins Total Time: 1 hr 10 mins Servings: 4 Jump to Nutrition Facts Cook Mode (Keep screen awake) Ingredients 1x 2x 4x Oops! Something went wrong. Our team is working on it. Original recipe (1X) yields 4 servings 2 tablespoons red wine vinegar 2 cloves garlic, minced 1 tablespoon cracked black pepper 1 teaspoon dried rosemary leaves, crumbled 1 teaspoon dried oregano ¼ teaspoon kosher salt ¼ cup olive oil 1 ½ pounds flat iron steak 3 tablespoons softened unsalted butter 1 ounce crumbled blue cheese 1 tablespoon chopped fresh chives ⅛ teaspoon cracked black pepper Directions Whisk olive oil, vinegar, garlic, 1 tablespoon black pepper, rosemary, oregano, and kosher salt together in a bowl and pour into a resealable plastic bag. Add steak, coat with the marinade, squeeze out excess air, and seal the bag. Marinate in the refrigerator for 30 minutes. Preheat an outdoor grill for medium-high heat and lightly oil grate. Remove steak from the marinade, shake off excess, and discard remaining marinade. Allow steak to stand at room temperature as the grill warms. Meanwhile, mash butter, blue cheese, chives, and 1/8 teaspoon of black pepper together until combined; set aside. Cook steaks on the preheated grill until firm and reddish-pink and juicy in the center, about 5 minutes per side. An instant-read thermometer inserted into the center should read 130 degrees F (54 degrees C). Allow steak to rest in a warm place for 10 minutes before slicing thinly across the grain. Serve with a dollop of blue cheese-chive butter. Editor's Note: The nutrition data for this recipe includes information for the full amount of the marinade ingredients. Depending on marinating time, ingredients, cooking method, etc., the actual amount of the marinade consumed will vary. I Made It Print 288 home cooks made it! Nutrition Facts (per serving) 551 Calories 44g Fat 3g Carbs 37g Protein Show Full Nutrition Label Hide Full Nutrition Label Nutrition Facts Servings Per Recipe 4 Calories 551 % Daily Value * Total Fat 44g 56% Saturated Fat 16g 82% Cholesterol 144mg 48% Sodium 331mg 14% Total Carbohydrate 3g 1% Dietary Fiber 1g 3% Total Sugars 0g Protein 37g 74% Vitamin C 2mg 2% Calcium 61mg 5% Iron 1mg 5% Potassium 65mg 1% * Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs. ** Nutrient information is not available for all ingredients. Amount is based on available nutrient data. (-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.