Truffle Steak with Garlic Mashed Potatoes Celebrate a special occasion or just the company of friends and family with this recipe for juicy steak and garlic mashed potatoes. Porcini Mushrooms with White Truffle Oil sauce simmers to create a delectable complement to medium-rare steak. Cut in and enjoy! 4 Servings 15 minutesPrep Time 15 minutesCook Time 0 peopleloved this print Ingredients Directions Ingredients 1 lb. all-purpose potatoes,, peeled and cut into chunks 3 cloves garlic, peeled 1/4 cup PLUS 2 tbsp. butter,, divided 1/4 cup milk 1 lb. boneless sirloin steak 1 large red onion, thinly sliced Bertolli® Portobello Mushroom Sauce Directions Step 1: Cover potatoes and garlic with salted water in large saucepan and bring to a boil over high heat. Reduce heat to low and cook uncovered until potatoes are tender, about 12 minutes. Drain; return to saucepan. Add 1/4 cup butter, milk and salt and pepper to taste; mash until smooth. Step 2: Meanwhile, season steak, if desired, with salt and pepper. Melt 1 tablespoon butter in large nonstick skillet over medium-high heat and cook steak, turning once, to desired doneness, 6 to 8 minutes for medium-rare. Remove steak; set aside and keep warm. Step 3: Heat remaining 1 tablespoon butter in same skillet over medium heat and cook onion, stirring frequently, until golden, about 5 minutes. Stir in 1/4 cup water, cover and cook, stirring occasionally, until tender, about 4 minutes. Stir in sauce and bring to a simmer. Reduce heat and simmer 2 minutes. Step 4: Cut steak into 4 pieces. Spoon sauce onto plates; top with steak and serve with mashed potatoes. Garnish, if desired, with chopped parsley. Share This Recipe Share How To Sending Thank you! Your email was sent.Send another! Send More Enter your name* Recipient Name* Recipient Email Address* Enter your message here Hey! Thought you might like to learn how to do this from Bertolli. * Required field Send How To Related How To's & Recipes 15-Minute Chicken Margherita Get Cooking Tuscan Table Fall Get Cooking Spicy Tuscan Rigatoni with Sausage & Mushrooms Get Cooking Antipasto Tray Get Cooking Alfredo Florentine Lasagna Get Cooking Marinade Ratio Get Cooking