MUSHROOM SAUCE FOR ROAST BEEF RECIPES

Steps:

• Preheat the oven to 400 degrees F.
• Heat a large ovenproof skillet over medium-high heat. Pat the beef dry and season all over with salt and a generous amount of pepper. Add the oil to the skillet and heat until shimmering. Add 1 tablespoon of the butter and swirl to melt. Add the beef and sear until mahogany brown on all sides, about 8 minutes total.
• Transfer the skillet to the oven. Roast until an instant-read thermometer inserted in the center registers 125 degrees F for medium rare, about 25 minutes. 
• Meanwhile make the ragout: Heat 2 tablespoons of the butter in a large skillet over medium-high heat. Add the mushrooms and spread them out evenly; increase the heat to high. Let the mushrooms cook, undisturbed, until browned, then shake the skillet to flip them over. Add the additional butter along the sides of the skillet as the mushrooms cook if the skillet seems very dry. Continue to cook until nicely browned, about 5 minutes. 
• Add the shallot and cook, stirring often, until softened, about 2 minutes. Season the mushrooms with 1/2 teaspoon salt and some pepper; add the thyme. Pull the skillet off the heat and add the Madeira. Return the skillet to the heat and scrape up any of the brown bits from the bottom with a wooden spoon. Add the heavy cream and bring to a boil. Remove from the heat and keep warm.
• When the beef is ready, transfer to a cutting board, tent very loosely with aluminum foil and let rest for 10 to 15 minutes.
• Slice the beef across the grain, arrange on a platter and serve with the mushroom ragout.

Steps:

• Sprinkle roast with salt and pepper. In a Dutch oven, brown roast in oil on all sides. Transfer to a 6-qt. slow cooker. Add the mushrooms, onions, broth, wine, tomato sauce, parsnips, celery, carrots, garlic, bay leaves, thyme and chili powder. Cover and cook on low for 6-8 hours or until meat is tender., Remove meat and vegetables to a serving platter; keep warm. Discard bay leaves. Skim fat from cooking juices; transfer to a small saucepan. Bring liquid to a boil. Combine cornstarch and water until smooth; gradually stir into the pan. Bring to a boil; cook and stir for 2 minutes or until thickened. Serve with mashed potatoes, meat and vegetables.