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April 18, 2019

Instant Pot Garlic Pork Tenderloin and Mashed Potatoes

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Instant Pot Garlic Pork Tenderloin and Mashed Potatoes–tender slices of seasoned pork with creamy mashed potatoes and gravy. All made in one pot, your Instant Pot.

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Instant Pot Garlic Pork Tenderloin and Mashed Potatoes--tender slices of seasoned pork with creamy mashed potatoes and gravy. All made in one pot, your Instant Pot.

Instant Pot Garlic Pork Tenderloin and Mashed Potatoes

Pork tenderloin is a fancy-ish meal that is super easy to make and hard to mess up. The pork is tender and seasoned well and cooks fairly quickly in your electric pressure cooker. Make sure to pick up a pork tenderloin at the grocery store and not pork loin or pork sirloin. Pork tenderloin is long and skinny. Many times they’ll be more than one in a package. When I bought mine I thought it was one 2-pound piece of meat but when I opened it it was two 1-pound pieces.

pork tenderloin in package

Open the package of pork tenderloin and blot it well with some paper towels. This step is important so the browning can take place. After you rub a few seasonings into the tenderloin brown the pork for a couple minutes on each side to really seal in the flavor. It’s totally worth the extra step. While the pork is browning you can prepare your potatoes (if you want them). This recipe is cool because the pork and mashed potatoes are made in the same pot at the same time! The potatoes cook on the bottom and the pork is laid on the potatoes and cooked on top. Plus when the pork and potatoes are done cooking you can make a gravy with the remaining drippings. Yum!

If you’ve never made or tried pork tenderloin try it out this weekend! It will become a family dinner staple.

Pin this recipe for later!

Instant Pot Garlic Pork Tenderloin and Mashed Potatoes--tender slices of seasoned pork with creamy mashed potatoes and gravy. All made in one pot, your Instant Pot.

More Instant Pot recipes you’ll love…

Instant Pot Pork Tenderloin with Gravy

Instant Pot Creamy Tuscan Chicken

Instant Pot Garlic Mushroom Chicken

What Pressure Cooker Did You Use?

To make Instant Pot Garlic Pork Tenderloin and Mashed Potatoes I used my 6 quart Instant Pot Duo 60 7 in 1*. I love this Instant Pot because it has the yogurt making function which I use almost weekly.  It has two pressure settings (high and low), and there are also little slots in the handles so that you can rest the lid there instead of putting it down on your counter-top.

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Instant Pot Garlic Pork Tenderloin and Mashed Potatoes--tender slices of seasoned pork with creamy mashed potatoes and gravy. All made in one pot, your Instant Pot.
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Instant Pot Garlic Pork Tenderloin and Mashed Potatoes


★★★★★

5 from 6 reviews

  • Author: Karen Petersen
  • Prep Time: 20 minutes
  • Cook Time: 6 minutes (plus 10 minute NPR)
  • Total Time: 46 minutes
  • Yield: 6 servings 1x
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Ingredients

Scale
  • 1 Tbsp olive oil
  • 2 (1 pound) pork tenderloins (I bought a package that had two little tenderloins in it–so 2 pounds total)
  • 2 tsp kosher salt
  • 1 tsp pepper
  • 1 Tbsp Italian seasoning
  • 2 Tbsp minced garlic
  • 3 pounds russet potatoes
  • 2 cups water
  • 1/4 cup butter
  • 1/4–1/2 cup milk
  • 3 Tbsp cornstarch + 4 Tbsp cold water

Instructions

  1. Open the package of pork tenderloin. Set the pork on a cutting board and blot it with a paper towel to absorb any moisture. If needed, cut the pork tenderloins in half (crosswise) so that it will fit inside your Instant Pot.
  2. Combine the kosher salt, pepper and Italian in a small bowl. Rub the seasonings all over the pork evenly.
  3. Turn your Instant Pot to the sauté setting. When the display says HOT add in the oil. Swirl around the oil. Place the pork into the bottom of the pot, you might have to arrange it to all fit. Let the pork sit for 3 minutes and then flip it to the other side and brown it for 3 minutes on the other side (skip to the next step while waiting). Use tongs to remove the pork from the pot and place it back on the cutting board. Pat the minced garlic evenly over the surface of the tenderloins.
  4. While the pork is browning prepare your potatoes. Wash and peel the potatoes (I usually just leave the peels on) and cut them into 1-inch cubes. 
  5. Pour the water into the bottom of the pot and scrape off any brown bits that remain. Add in the potatoes in an even layer. Place the pork tenderloins on top of the potatoes. You may have to arrange them to fit.
  6. Cover you pot and secure the lid. Make sure the valve is set to sealing. Set the manual/pressure cook button to 5 minutes on high pressure. When the time is up let the pot sit for 10 minutes and then move the valve to venting. Open the pot and move the pork to a platter. The pork needs to be at least 145 degrees F in the middle. I use a digital thermometer*. Let the pork sit for 5 minutes before slicing it.
  7. Use a slotted spoon to remove the potatoes. Place them in a bowl. Use a masher to mash them. Stir in the butter and milk and then salt and pepper to taste.
  8. Use the liquid in the Instant Pot to make gravy. Turn the Instant Pot to sauté setting. In a small bowl stir together the corn starch and the cold water until completely smooth. Stir the mixture into the pot and whisk until the gravy is thick. Salt and pepper the gravy to taste.
  9. Serve the sliced pork loin with the mashed potatoes and gravy. Enjoy!

Notes

If you just want the pork tenderloin and don’t want the potatoes: Place the pork on a trivet instead of the potatoes. Pour 1 ½ cups of water in the bottom of the pot. Deglaze the pot with the water. Keep the cooking time the same. 

This recipe is gluten free.

I used my 6 quart Instant Pot Duo 60 7 in 1*. 

  • Category: Pork
  • Method: Instant Pot

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*Karen Petersen is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.

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52 Comments Filed Under: All Recipes, Gluten Free, Pork, Instant Pot

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Comments

  1. Leah says

    March 25, 2021 at 11:23 am

    How should I adjust cooking time for 2 pork loin filets weighing 1.37 and .95 each?

    Reply
    • Karen says

      March 25, 2021 at 3:09 pm

      are they pork tenderloin? If not I am not entirely sure
      tenderloin and pork loin are really different

      Reply
      • Leah says

        March 25, 2021 at 5:07 pm

        The tag says pork loin filet. I guess that means it’s a pork loin??

        Reply
        • Karen says

          March 26, 2021 at 7:51 pm

          You may have to increase the time a few extra minutes. I would use a meat thermometer to see that the middle of the pork comes to the right temperature (145)

          Reply
          • Leah says

            March 27, 2021 at 8:48 pm

            Thank you!

  2. Linda says

    March 13, 2021 at 12:47 pm

    How long would I cook to make tenderloin in the slow cooker? For some reason the family doesn’t like pork cooked in the IP…but this sounds really good!

    Reply
    • Karen says

      March 15, 2021 at 12:21 pm

      I would guess 4 hours on low would be perfect.

      Reply
      • Linda says

        March 16, 2021 at 12:53 am

        Wellll, I decided I was making it in the IP anyway…first time ever making a tenderloin…they loved it! Shredded the rest and made bbq sandwiches…and they loved that too! Thank you for the great recipes!!!

        ★★★★★

        Reply
        • Karen says

          March 17, 2021 at 3:23 pm

          Oh I’m so glad they liked it! WIN!

          Reply
  3. Kelly Howell says

    December 2, 2020 at 4:19 pm

    Im not sure if a pork loin filet qualifies as tenderloin or loin but i made the vacuum sealed Smithfield garlic & herb fresh pork loin filet this way & it came out better than my tenderloin did (it was good as well). Very flavorful & tender. I threw in baby potatoes as well. Delicious

    ★★★★★

    Reply
  4. Stephanie says

    August 22, 2020 at 10:10 pm

    I saw your note about being careful to buy pork tenderloin instead of pork loin. Unfortunately, my Instacart shop was not so cautious! Is there any way this recipe can be salvaged with the wrong cut of meat??

    Reply
    • Karen says

      August 24, 2020 at 12:03 pm

      I would use this recipe instead! it’s so good: https://www.365daysofcrockpot.com/instant-pot-pork-loin-with-honey-butter-garlic-sauce/
      Or you could follow the cooking directions from that recipe but use the ingredients from the garlic pork recipe.

      Reply
      • Stephanie says

        August 25, 2020 at 1:05 pm

        Thanks!

        Reply
    • Kelly Howell says

      December 2, 2020 at 4:16 pm

      I did this recipe with Smithfield roasted garlic & herb fresh pork loin filet. not sure if that’s the right cut but was so much better than when i used the tenderloin.

      Reply
  5. Mary Holley says

    July 8, 2020 at 4:19 pm

    Are there crockpot instructions for this recipe, too?

    Reply
    • Karen says

      July 11, 2020 at 10:11 pm

      Hi Mary, I haven’t tried this one in the crockpot yet! I need to!

      Reply
  6. Katie says

    February 12, 2020 at 11:39 am

    Sounds delish! Could you do this recipe with turkey breast tenderloins?

    Reply
    • Karen says

      February 13, 2020 at 11:04 am

      I’m not totally sure…I bet you could. I think you’d need to increase the cooking time though. How thick is the meat?

      Reply
  7. David Boyd says

    January 12, 2020 at 3:30 pm

    Am I reading the cook time correctly of 5 minutes then rest??? If that is correct, why are some recipes for pork roast 5 minutes and others 90 minutes??

    Reply
    • Karen says

      January 13, 2020 at 12:49 pm

      Hi David, yes you are reading right! For this particular recipe the pork is browned first on each side for 3 minutes. So that cuts the cooking time down a bit. Plus pork tenderloins are those long, skinny and lean cuts of meat so they cook quickly. Pressure cooking is based on how thick the food is. So with a big hunk of pork butt that would take much much longer. Plus pork shoulder is fattier and has more collagen in it so it takes a lot longer to break down. Hope this helps! Make sure you get a pork tenderloin for this recipe, not pork loin.

      Reply
  8. Kare says

    November 5, 2019 at 5:27 pm

    Making right now! Can’t wait to taste it!

    Reply
    • Karen says

      November 6, 2019 at 6:39 pm

      Hope you like it!

      Reply
      • Kara says

        December 31, 2019 at 8:52 pm

        How would I alter this for an 8 quart?

        Reply
        • Karen says

          December 31, 2019 at 10:58 pm

          I would keep the recipe the same. With 2 cups of water, it should come to pressure no problem.

          Reply
  9. Melissa says

    September 29, 2019 at 7:29 pm

    This was very good. I used a single 1.3 lb tenderloin and used one cup of chicken stock instead of water. Everything else I did exactly as written. I’ve made a few pork tenderloin recipes in the instant pot and this is the first one that I feel has the cook time spot on to get a tenderloin that’s perfectly done. I can’t wait to serve this the next time we have company! They’ll be so impressed get it was so simple to put together. Thanks for sharing!

    ★★★★★

    Reply
    • Karen says

      September 30, 2019 at 3:00 pm

      So happy to hear this Melissa! Thanks for sharing your experience 🙂

      Reply
      • Kirstin says

        October 15, 2019 at 3:18 pm

        Thank you! Mine turned out so well the first time, I’m using this recipe again today!

        Reply
        • Karen says

          October 21, 2019 at 7:49 pm

          GREAT!

          Reply
  10. Kirstin says

    September 16, 2019 at 2:44 pm

    When setting the pork on top of the potatoes, do you use the trivet? Or do you set it directly on top?

    Reply
    • Karen says

      September 17, 2019 at 1:13 pm

      I did not use a trivet.

      Reply
  11. Judith Kimball says

    September 3, 2019 at 12:17 pm

    Sounds awesome! I will definitely try this. What change would I have to make if I wanted to add carrots or beans?

    Reply
    • Karen says

      September 3, 2019 at 1:04 pm

      I would add some cut up carrots or green beans on top of the roast. I bet it would be great!

      Reply
      • Kelly Howell says

        November 2, 2020 at 4:00 pm

        Can i use baby red potatoes instead of russet?

        Reply
        • Karen says

          November 2, 2020 at 5:01 pm

          Yes that will be delicious

          Reply
  12. Cate says

    August 22, 2019 at 7:00 pm

    This recipe was super awesome! I loved how easy it was to cook potatoes and the pork together, so many times I want mashed potatoes but cooking it separately feels like a chore! Next time I make it I’m goi g to try to add a little more depth of flavor to the pork, needs beef broth maybe instead of water when cooking it, maybe a couple extra spices but wow it was so delicious. Will become a regular meal for sure!!

    ★★★★★

    Reply
    • Karen says

      August 23, 2019 at 3:09 pm

      Yes the beef broth would be great! I’ll also try that next time.

      Reply
  13. Jessica Touchard says

    August 19, 2019 at 7:43 pm

    This is a great way to cook pork tenderloin. Tons of flavor! The whole family loved it. I only had 3 potatoes and that was plenty. Also made enough for a couple lunches!

    ★★★★★

    Reply
    • Karen says

      August 20, 2019 at 3:16 pm

      Nice! I love leftovers 🙂

      Reply
  14. dale goodloe says

    August 14, 2019 at 6:53 pm

    B/c I’m single, I have the 3 qt. Mini Instant Pot. Concerned I made a mistake getting this one b/c I never see recipes for it or how to reduce recipes for the 6 qt. to 3 qt.

    Reply
    • Karen says

      August 14, 2019 at 9:26 pm

      Please read this article. I think it will really help you! https://www.365daysofcrockpot.com/how-to-halve-instant-pot-recipes/

      Reply
  15. Misty Allen says

    July 25, 2019 at 9:13 am

    Can I make this with just one pork tenderloin? If so, do I cut everything except the water in half? Thank you!

    Reply
    • Karen says

      July 25, 2019 at 12:58 pm

      yes that’s right.

      Reply
  16. Jan says

    July 15, 2019 at 5:24 pm

    First time cooking ork tenderloin. Opened to season and find its in 2 pieces. Do I cook them on top of one another as pkged?

    Reply
    • Karen says

      July 15, 2019 at 6:42 pm

      If you can, spread them out a bit.

      Reply
    • Melissa says

      August 4, 2019 at 5:02 pm

      I want to make this using 1 pound pork tenderloin without potatoes. I plan to use my 3 quart IP. I know I can decrease the water to 1 cup and adjust seasoning but not sure how much cook time to add due to smaller IP reaching pressure more quickly. What do you recommend?

      Reply
      • Karen says

        August 5, 2019 at 2:16 pm

        I would add a couple of minutes.

        Reply
  17. Lilly says

    July 15, 2019 at 3:06 pm

    Can this be made with same cook times if frozen when you place it in the IP?

    Reply
    • Karen says

      July 15, 2019 at 3:40 pm

      You’ll need to increase the cooking time. I would try 12 minutes and check for doneness with a thermometer.

      Reply
  18. Donna DelVecchio says

    May 28, 2019 at 9:18 pm

    Just purchased an 8 qt ip and would like to cook 4 tenderloins on Saturday night.Do I need to increase water and time to cook them? Thank you for your help.

    Reply
    • Karen says

      May 30, 2019 at 7:40 pm

      I would read this article. It will be helpful to you: https://www.365daysofcrockpot.com/how-to-double-instant-pot-recipes/

      Reply
  19. Joyce Dvorak says

    May 5, 2019 at 2:03 pm

    I made this last night for the first time (just the pork, we opted for roasted sweet potatoes) My guests loved it and my 7 year old loved it. He told me it was the best “Chicken” I ever made!! 🙂 He ate every bite – we will definitely make this again! And yes, I told him it was pork.

    This web site has been such a help as I get to learn about using an InstaPot! Thank you.

    ★★★★★

    Reply
    • Karen says

      May 6, 2019 at 8:03 am

      Thanks Joyce! I’m glad he liked the chicken 🙂

      Reply

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Hi, I’m Karen. I know that dinner time can be less than relaxing. Busy schedules and cranky kids and a hundred other things can lead to weariness when it comes to putting dinner on the table. I can help! I make homemade, family-friendly slow cooker and Instant Pot dinners and share the recipes with you.

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