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Roasted Beef Tenderloin with French Onion Au Jus | halfbakedharvest.com @hbharvest
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4.16 from 206 votes

Roasted Beef Tenderloin with French Onion Au Jus

Savory, decadent, buttery, and so full of flavor...perfect for a very special night.
Prep Time15 mins
Cook Time1 hr
Total Time1 hr 15 mins
Course: Main Course
Cuisine: American
Keyword: roast beef, roast dinner
Servings: 6 servings
Calories: 951kcal
Author: halfbakedharvest


  • 1 (4-5 pound) whole beef tenderloin
  • 2 cloves garlic, minced or grated
  • 2 tablespoons chopped fresh thyme
  • 1/4 cup peppercorns crushed, or fresh black pepper (I use pink peppercorns)
  • kosher salt
  • 2 tablespoons butter

French Onion Au Jus


  • 1. Remove the meat from the fridge 1-2 hours before roasting. Preheat the oven to 475 degrees F.
    2. Rub the beef with garlic, thyme, and season generously with peppercorns and salt. At this point, the meat can be stored in the fridge up to overnight. Bring the meat to room temperature before cooking. 
    3. Arrange the onions in a large, oven safe skillet. Place the beef over the the onions. Add 2 tablespoons butter to the top of the beef. Transfer to the oven and roast until the beef registers 120 to 125 degrees F for medium-rare, for rare about 35-45 minutes, depending on the size of your roast. It's best to use a meat thermometer.
    4. Remove the beef from the skillet to a serving plate and cover with foil. Let rest 10 minutes before slicing.
    5. Meanwhile, set the skillet with the onions over medium heat. Add 6 tablespoons butter and cook, stirring frequently, until the onions are deep golden in color and caramelized, 5-10 minutes. Add the wine, beef broth, Worcestershire sauce, and thyme. Increase the heat to medium-high and bring to a simmer. Remove the thyme sprigs. Season to taste with salt and pepper.
    6. Slice the beef and serve with the French Onion Au Jus. 


Calories: 951kcal | Carbohydrates: 10g | Protein: 56g | Fat: 81g | Saturated Fat: 36g | Cholesterol: 251mg | Sodium: 393mg | Potassium: 1219mg | Fiber: 1g | Sugar: 3g | Vitamin A: 610IU | Vitamin C: 10.9mg | Calcium: 63mg | Iron: 8.2mg