What temperature should beef tenderloin be cooked to?
Use an instant-read thermometer in the thickest part of the center (avoid touching the pan). These are pull temperatures:
- 120 to 125°F for rare
- 130 to 135°F for medium-rare (my pick for tenderloin)
- 140 to 145°F for medium
After resting, the temp typically rises about 5°F (sometimes up to 10°F, depending on roast size and how you rest it).
USDA note: The USDA recommends whole cuts of beef reach 145°F with a 3-minute rest for food safety. Many people cook tenderloin like a steak and choose lower final temps for doneness, so decide what you are comfortable with.
Do I need to tie beef tenderloin?
If your roast is uneven in thickness, yes. Tying with kitchen twine every 1 to 2 inches helps it cook evenly and look neat when sliced. If it is already uniformly shaped, you can skip it.
Should I sear tenderloin before roasting?
Yes. Searing builds flavor and gives you that browned exterior. The oven alone will cook it through, but it will not give you the same crust.
Do I need to trim it?
Many tenderloin roasts are sold trimmed. If yours has a tough, shiny strip called silver skin, remove it with a sharp knife (slide the blade just under it and trim it off). That one step makes a big difference in tenderness.
Can I prep this ahead of time?
Absolutely. You can make the garlic herb butter up to 3 days ahead. You can also season the roast and keep it uncovered on a rack in the fridge overnight for a drier surface and better sear.
What if I do not have a roasting rack?
No problem. Set the tenderloin on a few thick onion slices, or even a couple of celery stalks. You just want air under the roast so it cooks evenly.