Roasted Beef Tenderloin with French Onion Au Jus

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# 🥩🇫🇷 **Roasted Beef Tenderloin with French Onion Au Jus: The Show-Stopping Dinner You’ll Crave Again and Again**

If you’re looking to impress at your next dinner party, holiday gathering, or even just elevate your Sunday meal, look no further than this elegant yet surprisingly approachable dish: **Roasted Beef Tenderloin with French Onion Au Jus**.

It’s rich, flavorful, and has that classic steakhouse feel—with a French twist that takes it over the top. The tenderloin is melt-in-your-mouth perfect, and the **savory, caramelized onion au jus** gives it a bold, luxurious finish. Best of all? You don’t need to be a pro chef to pull this off.

Let’s dive into what makes this dish a true showstopper.

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## 🌟 **Why You’ll Love This Recipe**

– **Tenderloin = Elegance:** Beef tenderloin is one of the most tender cuts of meat—juicy, buttery, and always impressive.
– **French Onion Au Jus = Flavor Bomb:** Inspired by classic French onion soup, this au jus is packed with deep, rich flavor thanks to caramelized onions, beef stock, herbs, and a splash of wine.
– **Perfect for Holidays or Date Nights:** This recipe screams *special occasion*, but it’s simple enough for confident home cooks to master.

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## 🍽️ **Ingredients You’ll Need**

### **For the Beef Tenderloin:**
– 1 whole beef tenderloin (about 3–4 lbs), trimmed
– 2 tbsp olive oil
– 2 tsp kosher salt
– 1 tsp black pepper
– 2 tsp fresh rosemary or thyme, chopped
– 4 cloves garlic, minced

### **For the French Onion Au Jus:**
– 2 tbsp butter
– 2 large yellow onions, thinly sliced
– 1 tsp sugar (helps caramelize)
– 2 cups beef broth (or stock)
– ½ cup dry red wine (optional, but adds depth)
– 1 tsp Worcestershire sauce
– 1 sprig fresh thyme
– Salt and pepper to taste

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## 🔥 **How to Make It**

### **1. Roast the Tenderloin**
– Preheat your oven to 425°F (220°C).
– Pat the beef dry, then rub with olive oil, salt, pepper, garlic, and herbs.
– Heat a skillet over high heat and sear the beef on all sides until browned.
– Transfer to a roasting pan and roast for 25–35 minutes, or until internal temp reaches **130°F for medium-rare**.
– Rest for 10–15 minutes before slicing.

### **2. Make the French Onion Au Jus**
– In a skillet, melt butter over medium heat. Add sliced onions and sugar, stirring often.
– Cook slowly for 20–30 minutes until golden and caramelized.
– Add wine to deglaze the pan, scraping up brown bits.
– Stir in beef broth, thyme, and Worcestershire sauce. Simmer for 10–15 minutes until slightly reduced.
– Strain if desired for a smoother au jus, or leave onions in for texture and flavor.

**3. Serve Like a Pro**
– Slice the tenderloin into medallions.
– Spoon warm French onion au jus over the top.
– Garnish with extra herbs or crispy fried onions if you’re feeling fancy.

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