01 - Set the oven to 425°F.
02 - Pat beef dry and rub with olive oil, kosher salt, and freshly ground black pepper.
03 - Place onions, carrots, and celery in a large roasting pan. Position beef on top. Arrange rosemary, thyme, and smashed garlic around the beef.
04 - Roast beef at 425°F for 20 minutes.
05 - Reduce oven temperature to 350°F and roast for an additional 70 to 80 minutes until internal temperature reaches 130°F for medium-rare.
06 - Transfer beef to a cutting board, cover loosely with foil, and let rest for 20 minutes.
07 - Remove herbs from roasting pan and discard. Spoon off excess fat. Place pan on medium heat.
08 - Add butter and flour to the pan, stirring constantly to form a roux. Cook for 2 minutes.
09 - Slowly whisk in beef stock and red wine, scraping browned bits from the pan. Simmer for 5 to 7 minutes until thickened. Optionally strain. Season with salt and pepper.
10 - Slice beef and serve with roasted vegetables and gravy.