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This simple and easy recipe will show you exactly how to cook a boneless pork loin roast. I know this might be simple for some of you but we all have to start cooking somewhere and actually, the USDA has re-vamped their cooking temperature guidelines when it comes to cooking a pork roast. Did you know that we no longer have to cook pork roasts until they are shoe leather like our Moms & Grandparents did?

Yup. We now get to cook them to 145 °F.

Pork Loin Roast
Pork Loin Roast

How to Cook a Boneless Pork Loin Roast

If you want to read up on the new guidelines, head on over here.

It does take some getting used to, the fact that your pork roast will be slightly pink in the middle. The first time I made it my Mom was appalled. APPALLED. That’s the only word I can use. She couldn’t believe that I was trying to kill my family by feeding them undercooked pork.


That’s why I’m writing up this quick how-to post, because this is the NEW how to cook a boneless pork loin roast method. No shoe leather. Gravy is a delicious addition if wanted, not a necessity so that you don’t choke on a bone dry roast.

Trust me, once you start treating pork more like a beef roast instead of chicken ( we all freak when chicken is pink!) you are going to love pork roasts again!

How to Cook a Boneless Pork Loin Roast

The recipe is plain, simple and one of my favourite ways to cook up a roast. The ends are going to be well cooked – better for those people that are still having a hard time eating pink pork- but the center?

Perfection. I will never go back to eating show leather pork again!

So who else has hopped on board? Did you find it a mental challenge to eat pink pork?

If you are looking for other pork recipes, try my recipes for:

Slow Cooker Texas Pulled Pork

Beer & BBQ Pulled Pork

Crockpot Apple Juice Pulled Pork



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4.34 from 3 votes
How to Cook a Boneless Pork Loin Roast
Prep Time
5 mins
Cook Time
1 hr

How to Cook a Boneless Pork Loin Roast from start to finish!

Course: Main Course
Cuisine: American
Keyword: Pork Loin Roast
Servings: 8 servings
Calories: 467 kcal
Author: Karlynn Johnston
  • 1 4-5 lb boneless pork loin roast
  • 7 garlic cloves minced
  • 1 1/2 tbsp coarse sea salt
  • 3 Tbsp. chopped fresh rosemary
  • 1 tsp. freshly ground black pepper
  • 1/4 cup olive oil
  • 1-2 lbs of chopped carrots potatoes and onions
  • cocktail tomatoes
  1. Preheat your oven to 450° F.
  2. In a small bowl, combine the oil, garlic, rosemary, salt and pepper, and mix until a paste forms.
  3. Pat the pork roast with a paper towel to remove excess moisture and then rub 2/3 of the seasoning mixture onto the roast, covering the top and sides.
  4. Place the roast in the bottom of a large roaster.
  5. Place desired vegetables around the roast. Dab the remaining seasoning mixture over the vegetables.
  6. Roast in the pre-heated oven for 15 minutes, then turn the oven temperature down to 300° F. Let the roast continue to roast for another 30-40 minutes or until the internal temperature reaches 140° F when a meat thermometer is inserted into the middle. During the last 10 minutes of cooking, throw in a handful of cocktail tomatoes if desired - I love roasted tomatoes!
  7. Remove the roast from the oven and cover it with foil. Let it rest 10 minutes, then slice and serve.
Recipe Notes

New USDA recommendations are that pork can now be safely cooked to 145 °F.

Nutrition Facts
How to Cook a Boneless Pork Loin Roast
Amount Per Serving
Calories 467 Calories from Fat 162
% Daily Value*
Total Fat 18g 28%
Saturated Fat 4g 20%
Cholesterol 172mg 57%
Sodium 1485mg 62%
Potassium 1271mg 36%
Total Carbohydrates 9g 3%
Dietary Fiber 4g 16%
Sugars 2g
Protein 62g 124%
Vitamin A 192.9%
Vitamin C 9.2%
Calcium 10.8%
Iron 18.6%
* Percent Daily Values are based on a 2000 calorie diet.





Hey guys, I'm Karlynn! Welcome to The Kitchen Magpie, my website full of family friendly recipes, cocktails & homesteading tales of chickens & cows from the family farm! Make sure to check out my bestselling cookbook, Flapper Pie & a Blue Prairie Sky ,stay tuned for info on my second cookbook!


  1. Tweets-
    Add teaspoon of dried marjoram into your seasonings add an additional 2 teaspoons of pepper .I use regular iodize salt
    I have an electric Oven acooks high so I put my oven on 395 for 20 minutes and I use a dark roasting pan .
    I also sliced on diagonal the top that has the more fat on it I wish I had a picture of it because it was so tender it broke right it broke right away this was a boneless pork roast I slathered on on the top of the meat and the fat drip down on the bottom it was delicious !
    I roasted it on 295 for another hour

  2. Denis Wesenberg Reply

    Who ever gave this a 5 star must have been smoking something. I really think I should send her the bill for my $18.00 pork loin roast.

  3. Marcie Martin Reply

    Going to try this tonight, I can hardly wait!!! It has loads of garlic, I mean come on, if it has garlic or bacon? You know it’s going to be AMAZING!!! 🙂

  4. Dana Martin Reply

    I tried this pork loin with rosemary and garlic. It was amazing and was beautiful to see coming out of the oven!

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