Oven Roasted Pork Tenderloin: Easy ingredients such as onions, butter, salt, pepper, thyme, basil garlic, and onion powder… the flavor packs a punch!
Hey Fantabulosity readers! It’s Meg again checking in with a ridiculously delicious and easy roasted pork tenderloin.
Roasted Pork Tenderloin
I’m betting you have all the ingredients for this pork tenderloin (except for maybe the pork) in your pantry and refrigerator already.
This roasted pork starts with a sliced onion on the bottom of your pan.
This provides a delicious little rack for the pork so it doesn’t sit in the juices while it roasts, adds some flavor, and gives a yummy little accompaniment to the pork when it’s finished.
How to Season Pork Tenderloin
Next the dry pork loin is rubbed with softened butter and sprinkled with a mixture of herbs and spices.
You’ll need kosher salt, pepper, dried thyme, dried basil, garlic powder, and onion powder. All pretty standard spices that combine to create the tastiest herby crust for the pork tenderloin.
Butter and Basting
Because the pork is rubbed with butter before baking, the flavor that is yielded is crazy rich and delicious. As the butter melts it bastes the pork and mingles with all the spices to create so much goodness.
Pork Tenderloin Ready-Made Sauce
The butter combines with the pork juices and creates a little pan sauce all on its own that is amazing drizzled over the sliced pork tenderloin. I promise you will be dragging your pork through ever last drop of it.
How long to cook pork tenderloin in the oven
This pork tenderloin only takes about 35 minutes to roast in the oven at 400°.
Pork Tenderloin Temp
I don’t know about you all but pork was a meat I always used to struggle cooking. It was either underdone or cooked so long it resembled jerky when chewing it. I just couldn’t seem to find the sweet spot when it came to pork.
What changed things for me? A digital meat thermometer with a temperature alert feature. You set the temperature you would like your food to be cooked, insert the probe, and put it in the oven (or grill or slow cooker). It’s oven safe and an alert will go off when the desired temperature has been reached.
I’m telling you, the thermometer is a complete game-changer. Especially when it comes to pork.
The safe temperature to cook pork to is now 145 degrees F so I set it that temperature then let it rest for 10 minutes after removing it from the oven.
Letting the pork rest, allows the pork to redistribute the juices and will keep it juicy rather than everything running out when you slice it.
TIP: The pork will also continue to cook in those 10 minutes so you could even set your thermometer to 140 degrees F instead if you want it cooked right to 145 degrees.
For me, I like it a little more just because even though I know it’s safe, the pink still freaks me out a little.
You can tell by looking at this gorgeously roasted pork tenderloin that it’s fancy enough to make for special dinner guests but you can also easily whip it up for your family on a Wednesday night too.
Slow Cooker or Crock Pot Pork Tenderloin Option
Although this pork is rich and juicy when roasted in the oven, it’s also a great option for the slow cooker. I tested it both ways and they yielded in amazing flavor and buttery goodness.
So, if you need to be away from your oven, prepare the pork tenderloin exactly as stated in the instructions, just placing in the slow cooker instead of a roasting pan. Cook on high for 4 hours and dinner will be ready to go.
Sides for Pork Tenderloin
Most love serving pork tenderloin with roasted vegetables or roasted potatoes as side dishes! Here are our favorites to serve with it:
Or, serve this delicious roasted pork tenderloin with spring mix apple raspberry salad to create the ultimate spring meal.
Roasted Pork Tenderloin
- 1 large yellow onion, peeled and sliced into 4 thick rings
- 1 to 1 1/2 lb. pork tenderloin
- 2 Tbsp. butter, softened
- 1 1/2 tsp. kosher salt
- 1/2 tsp. black pepper
- 1/2 tsp. dried thyme
- 1 tsp. dried basil
- 1 tsp. garlic powder
- 1 tsp. onion powder
- Preheat oven to 400 degrees F. Layer onion in the bottom of a small roasting pan. Pat dry the pork.
- Rub the pork evenly with butter and place on top of the onions.
- In a small bowl, combine the salt, pepper, thyme, basil, garlic powder and onion powder. Sprinkle evenly over the pork tenderloin and slightly press into the butter.
- Cook for 27 to 35 minutes, or until the internal temperature reaches 145 degrees F. Remove from the oven and allow to rest for 10 minutes before slicing. Drizzle pan sauce over the pork when serving.
Nutritional information is based on third-party calculations and should be considered estimates. Actual nutritional content will vary with brands used, measuring methods, portion sizes and more.
We love pork recipes around here, so here are the most popular pork recipes here on Fantabulosity!