Quick Answer: How Long to Cook Beef Tenderloin
For a typical 2‑ to 3‑pound beef tenderloin, roast at 425°F (218°C) for 15‑20 minutes per pound to reach medium‑rare (130‑135°F internal). Lower the oven to 350°F (177°C) after the initial sear for larger cuts, adding 10‑12 minutes per pound. Adjust 5‑7 minutes per pound for medium (140‑145°F) and 8‑10 minutes per pound for well‑done (155°F+). Always finish with a 10‑minute rest before slicing.
- Quick Answer: How Long to Cook Beef Tenderloin
- Understanding Beef Tenderloin
- Key Variables That Influence Cooking Time
- Standard Cooking Times by Weight and Doneness
- Step‑by‑Step Method for Perfect Tenderloin
- 1. Prepare the Meat
- 2. Bring to Room Temperature
- 3. Season Generously
- 4. Preheat Oven and Sear
- 5. Roast to Target Temperature
- 6. Rest Before Slicing
- Temperature Tools and Accuracy Tips
- Common Mistakes and How to Avoid Them
- Alternative Cooking Methods
- Frequently Asked Questions
- Can I cook a frozen tenderloin?
- What side dishes pair best?
- How far in advance can I season?
Understanding Beef Tenderloin
Beef tenderloin is the most tender muscle of the cow, located along the spine. Its low fat content makes it lean, so precise timing and temperature are crucial to avoid dryness. Because it is a long, cylindrical cut, heat penetrates evenly, allowing predictable cooking curves.
Key Variables That Influence Cooking Time
While weight is the primary driver, several factors affect the exact time needed:
- Desired doneness: Rare, medium‑rare, medium, or well‑done each require different internal temperatures.
- Oven temperature: Higher heat shortens overall time but can create a thicker crust.
- Shape and trimming: A uniformly trimmed, tapered tenderloin cooks more evenly than a piece with uneven ends.
- Starting temperature: A meat that begins at room temperature reaches target internal temps faster than straight‑from‑fridge meat.
Standard Cooking Times by Weight and Doneness
The table below summarizes the most reliable guidelines from USDA recommendations and professional chef testing. Times are expressed in minutes per pound; total time includes an initial high‑heat sear (425°F) followed by a moderate finish (350°F).
| Weight (lb) | Rare (120‑125°F) | Medium‑Rare (130‑135°F) | Medium (140‑145°F) | Well‑Done (155°F+) |
|---|---|---|---|---|
| 1.5 | 15‑18 min total | 18‑22 min total | 22‑26 min total | 28‑32 min total |
| 2.0 | 20‑24 min total | 24‑28 min total | 28‑34 min total | 36‑40 min total |
| 2.5 | 25‑30 min total | 30‑35 min total | 35‑42 min total | 44‑50 min total |
| 3.0 | 30‑36 min total | 36‑42 min total | 42‑50 min total | 52‑60 min total |
Step‑by‑Step Method for Perfect Tenderloin
1. Prepare the Meat
Trim excess silverskin and any large fat caps. Let the tenderloin sit uncovered in the refrigerator for 30‑45 minutes to dry the surface; this improves searing.
2. Bring to Room Temperature
Remove from the fridge 45‑60 minutes before cooking. A uniform internal temperature (around 65°F/18°C) reduces cooking variance.
3. Season Generously
Pat dry, then rub with olive oil, kosher salt, cracked black pepper, and optional aromatics (garlic, rosemary, thyme). Salt early (15‑20 min) to allow surface moisture to evaporate.
4. Preheat Oven and Sear
Preheat to 425°F (218°C). Place a heavy‑bottomed skillet (cast iron works best) on the stove, add a thin layer of oil, and sear the tenderloin on all sides (about 2‑3 min per side) until a deep brown crust forms.
5. Roast to Target Temperature
Transfer the skillet to the oven or move the meat to a roasting pan. Reduce oven temperature to 350°F (177°C) and roast according to the table above, checking with an instant‑read thermometer.
6. Rest Before Slicing
Remove the tenderloin when it is 5°F (3°C) below the desired final temperature. Tent loosely with foil and rest 10‑15 minutes. Resting allows juices to redistribute and the internal temperature to rise to the target.
Temperature Tools and Accuracy Tips
Invest in a quality instant‑read probe (digital, 0.1°F accuracy) and consider a leave‑in oven thermometer. Insert the probe into the thickest part of the meat, avoiding bone or fat. For the most reliable results, calibrate the probe against boiling water (212°F at sea level).
Common Mistakes and How to Avoid Them
- Skipping the sear: A proper sear creates flavor‑rich Maillard compounds and a visual cue that the meat is ready for the oven.
- Over‑resting: Rest longer than 20 minutes and the meat will cool too much, requiring reheating that can dry it out.
- Using a low oven temperature only: Cooking at 250‑300°F yields a uniform pink interior but dramatically extends total time and can result in a flat crust.
- Not accounting for carry‑over heat: Remember the meat continues to rise 5‑10°F while resting.
Alternative Cooking Methods
While oven roasting is classic, you can also achieve excellent results with these methods:
- Sous‑vide + sear: Cook at 129°F (54°C) for 2‑3 hours, then sear 1‑2 min per side for a perfect medium‑rare edge.
- Grill indirect heat: Set a two‑zone fire, sear over direct flame, then move to indirect zone at 350°F and follow the same time guidelines.
- Reverse‑sear oven method: Start at 250°F until 10°F below target, then finish at 500°F for a 5‑minute crust.
Frequently Asked Questions
Can I cook a frozen tenderloin?
Yes, but add 50% more time and start at 350°F without the initial high‑heat sear. Expect a slightly less crisp exterior.
What side dishes pair best?
Classic pairings include roasted root vegetables, garlic‑buttered potatoes, creamed spinach, or a red wine reduction sauce.
How far in advance can I season?
Season up to 24 hours ahead; keep the meat uncovered on a rack in the fridge. This dry‑brine deepens flavor and improves crust formation.