Pork Tenderloin Roast Recipe with Garlic Rosemary

A Juicy Tender and Lean Cut of Meat with Flavor Explosions

Pork tenderloin roast recipe with roasted potatoes green beans is almost like a one-pot meal.

Last Updated: Jan 23, 2023

Total Time: 95 Minutes
Prep Time: 10 Minutes  
Active Cook Time: 5 Minutes  
Inactive Cook Time: 80 Minutes  
Serving: 2-6

We eat a lot of pork in my family. So, I always look for new ways and new flavors to prepare a pork dinner.

The first bite of this pork tenderloin is like a flavor explosion in my mouth. It just popped and WOW.....Then, you don't want to stop. You want more delightful explosions over and over again.

This meal is very low maintenance with simple flavor, but healthy.

The recipe looks long and complicated. But it is NOT. Basically, you just transfer the ingredients to the roasting pan and put it into the oven. You need to turn the meat over in between to make sure it is cooked thoroughly.
This page shows you how to cook the rosemary garlic pork tenderloin and the roasted potatoes green beans in the same oven and feed your hungry family. Enjoy!

CHEF NOTES

The cook time difference of the meat and the side dish is only 30 minutes. So, wait for the first 30 minutes before putting the roasted potatoes green beans into the oven.

The later can also cook as a side dish and pair with another main course. Click here to find out how to cook the roasted potatoes and green beans individually.

I must admit that I love this pork tenderloin roast recipe so much. So every time when I have a chance, I will cook it along with the one with BBQ flavor. My hubby and son enjoy the BBQ one and I will take the rosemary garlic one and save half of it for my lunch. If you are on the same boat like me, you don't need to cook 2 pieces of pork tenderloin in separate baking dish. You can cook both in one.

All you need to do is to use the aluminum foil to help you to separate them out. Use your baking dish as a measuring unit. Then, have the aluminum foil to mold half of the size of that pan. In the end, you will make 2 individuals "containers" for each pork tenderloin. It will ensure that the juices are not going to mix up in the middle of the baking process.

Most pork tenderloin comes with 2 ends which are much thinner than the rest of the meat. That part tends to "overcook". Here are the tips for a quick fix. Get ready 2 toothpicks. Fold up the tip to make the entire piece of meat have about the same thickness. Then, secure it with toothpicks. Repeat the same steps with 2 more toothpicks over the other end of the pork tenderloin. Make sure to pull the toothpicks out before serving.

Can You Double the Quantity of This Pork Tenderloin Roast Recipe?

Yes, this recipe can easily double with the same cook time. Just to make sure to do the following:
You will have 2 pork tenderloins. Make sure that their weights are about the same for same cooking duration.
The meat should be about 2" apart from each other when they are in the roasting pan. Add 1/2 part more for all the seasonings. (I don't recommend double the seasonings. It will be too much and most likely too salty. Pork tenderloin is a kind of meat absorbing the flavors easily.)

Use a big baking sheet for the roasted potatoes green beans to allow them to be single layer. Double the seasonings for the vegetables. Otherwise, the vegetables will taste pretty "blah".
Double all your gravy ingredients to make extra gravy. Believe me, you will need it. Then, follow the rest of the instructions of this recipe to prepare and enjoy.

Pork Tenderloin Roast Recipe 100% Keto-Friendly

After stepping off my Keto-diet train in 2019, I continue to keep my meals low-carb. This is one of those recipes that you can enjoy the real stuff with the same flavor. First of all, we will skip the potatoes and the traditional way of making gravy to make it Keto-friendly.

You can follow this pork tenderloin recipe to make 2 meals for yourself. The side dish can be easily blanched green beans (link) or just use microwave to warm up some canned green beans. There are plenty of options when it comes to side dish. A easy one can be a green salad with ranch dressing. Here is the direction of making the Keto-friendly gravy:

This is the easiest Keto version of this recipe. Keto-friendly gravy and canned green beans. It sometimes is my bring-to-work lunch.

Keto-Friendly Gravy

Transfer the dripping to a medium saucepan and stir in 1/2 cup heavy cream. Bring the mixture to a boil and turn down heat to medium. Let it simmer about 5 minutes. Add Parsley flakes, salt and pepper to taste and serve it along with pork tenderloin roast recipe dinner.

Pork Tenderloin Roast Recipe and Directions

For Pork Tenderloin Ingredients
1.5-1.75 pound Pork Tenderloin
3 Cloves Small Garlic
1 heaping teaspoon Dried Rosemary
1/2 teaspoon Salt
1/4 teaspoon Black Pepper
3 tablespoons Extra Virgin Olive Oil
Non-stick cooking spray
4-7 toothpicks

For Roasted Potatoes Green Beans Ingredients
1 pound Frozen Cut Green Beans (unthawed)
1 pound Russet potato (skin on; wash thoroughly; cut in bite size wedges, about 1" per side)
1 teaspoon Salt
1/4 teaspoon Black Pepper
1 pinch Crushed Red Pepper (optional)
1/4 cup Extra Virgin Olive Oil

For Regular Gravy Ingredients
1/4 cup Flour
2 tbsp Pork dripping
2 tbsp Butter
2 cups Chicken Broth
1 tsp Dry Parsley Flakes
Salt and Pepper to taste

Rosemary Garlic Pork Tenderloin Directions

1. In a big mixing bowl, combine all seasonings (i.e. dried Rosemary, salt, black pepper and extra virgin olive oil) of the pork tenderloin.
2. Massage the meat in the marinade for 2-3 minutes.
3. Use a pairing knife to cut 3 holes on the meat with about the same distance apart from each other.  (Go easy on cutting the holes. The meat is so tender that the garlic could get exposed out of the meat and get burned during the cooking process. If you have to, use a toothpick to secure the garlic inside each hole so that it won't slice out)
4. Put a clove of garlic in each hole.
5. Tug in both ends of the tenderloin to make them about the same thickness like the rest of the meat and secure them with 2 toothpicks on each end.
6. Chill it overnight or sit on the counter in room temperature for about 20 minutes.
7. Adjust the racks, one is 2"and the other is 10" from the broiler (Do this step if you are cooking the potatoes and green beans.)
8. Preheat oven at 400F.
9. Line 2 roasting pans with aluminum foil for easy clean up later. Coat the pans with non-stick cooking spray.
10. Transfer pork tenderloin into one of the roasting pans.
11. Cook for 30 minutes in the middle rack. Turnover and cook another 30 minutes.
12. Turnover again and cook another 10 minutes. Repeat this last step one more time.
13. (If you cook the rosemary garlic pork tenderloin together with the roasted potatoes green beans, refer to the instructions below of how to coordinate in between)

Roasted Potatoes Green Beans Directions

1. While waiting for the meat cooking in the oven in the first 30 minutes, clean the potatoes thoroughly and cut into bite size wedges. (about 1” per side)
2. In a separate bowl, toss to coat the potatoes with the seasonings (i.e. crushed red pepper, salt, pepper and extra virgin olive oil).
3. Add the green beans into the 2nd foil lined roasting pan; then top with the seasoned potatoes.
4. After the first 30 minutes of cook time of the tenderloin, put the pan of vegetables on the top rack.
5. Turn over the meat and cook together with the vegetables for another 30 minutes.
6. Turn over the meat again and toss the vegetables; cook for 10 minutes.
7. Turn over the meat last time and toss the vegetables; cook another 10 minutes.
8. Take the meat out and rest for 5 minutes.
9. (Every time when you turn the meat over, toss the vegetables so that they cook thoroughly)
10. Turn off the oven and leave the pan of vegetables in the oven to keep it warm.

Regular Gravy Directions

1. While the meat is resting, transfer 2 tablespoon of pork tenderloin dripping into a medium sauce pan.
2. (If there is not enough dripping, replace the remaining required quantity with butter)
3. Add flour into the pan and whisk to combine with the dripping and cook it at medium high heat.
4. Let the roux cook about a minute and whisk in 2 cups of chicken broth until gravy is thick.
5. Transfer to a gravy boats.
6. Take the toothpicks out of the meat and slice about 1" thick for each piece.
7. Serve along with the roasted potatoes green beans and gravy.

Melt about 2tbsp of butter in a medium sauce pan

Add 1/4 cup of all purpose flour into the melted butter

Whisk to combine and make roux

Stir in meat dripping

Whisk in 2 cup of chicken broth

Gravy should be thick enough to cover the back of a spoon

Add parsley. Salt and pepper to taste

Pork Tenderloin Roast Recipe Steps with Photos

In the space of a mixing bowl, add in seasonings and pork tenderloin.

Mix seasonings with extra virgin olive oil like paste texture.

Mix marinade well and coat meat.

Use pairing knife to cut 3 holes and tug garlic cloves into the meat.

I normally cook 2 pork tenderloins of different flavors at the same time on the same roasting pan, only divided by foil.

Let meat rest for 5 minutes.

Transfer meat to a serving plate so that you can get to this dripping.

Transfer dripping to a medium sauce pan.

Add heavy cream to make Keto-friendly gravy.

Cook for 5 minutes until gravy is thick enough to coat the back of a spoon.

Add gravy on top and serve.

You can also serve it with regular gravy with roasted potatoes and green beans. ENJOY!

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