Beef Tenderloin with Red Wine Sauce

Wow your guests with ease! My roasted beef tenderloin paired with a rich red wine sauce is simple, sophisticated, and foolproof. INGREDIENTS FOR THE SAUCE 8 tablespoons unsalted butter, divided ¾ cup finely chopped shallots, from 2-3 large shallots 1¼ cups red wine 3 cups beef broth 6 fresh thyme sprigs ¼ teaspoon kosher salt ⅛ teaspoon ground black pepper 1 teaspoon sugar 2 tablespoons all-purpose flour FOR THE BEEF 1 (2 to 3 lb) center-cut beef tenderloin roast Kosher salt (½ teaspoon per pound of beef)