Roast Beef Tenderloin With Red Wine Sauce - Once Upon A Chef

Ingredients

• 8 tablespoons unsalted butter, divided
• 3/4 cup finely chopped shallots, from 2-3 large shallots
• 1-1/4 cups red wine
• 3 cups beef broth
• 6 fresh thyme sprigs
• 1/4 teaspoon kosher salt
• 1/8 teaspoon ground black pepper
• 1 teaspoon sugar
• 2 tablespoons all-purpose flour
• 1 (2 - 3 lb) center cut beef tenderloin roast
• Kosher salt (1/2 teaspoon per pound of beef)
• Freshly ground black pepper (1/4 teaspoon per pound of beef)
• 2 tablespoons vegetable oil
• 1/4 cup beef broth