Low Carb Mustard Crusted Roasted Pork Loin

Posted by on June 14, 2015 in Gluten Free Recipes, Low Carb Keto Recipes, Main Dishes | 3 comments

Low Carb Mustard Crusted Roasted Pork Loin

Do you love the idea of cooking Sunday roast but are terrified about cooking a big hunk of meat? Do you need a tried and true roast pork loin recipe–the kind that’s been around for generations and that’s absolutely fool-proof? Do you dream of being able to buy roasts on sale for $1.47/pound, but don’t know the first thing about cooking them? Join Fluffy Chix Cook as they de-mystify delicious and moist Low Carb Mustard Crusted Roasted Pork Loin and get comfy with Sunday roast!




Sliced Mustard Crusted Pork Loin


We grew up eating Sunday roasts. They were a way to easily cook for a crowd and also to have a few leftovers for lunch on Monday. They were cheap, easy, and tasted so comforting and satisfying and honestly, we’ve no idea why our generation fell out-of-touch with the Sunday Dinner Roast. They’re cheap (when purchased on sale), easy to prep, and have fast clean-up. And did we mention that as long as you hold the flour and starchy thickeners, they’re also perfectly healthy low carb keto food? There’s not even any special equipment necessary, just a pan large enough to cook it in, and you can find those at the thrift store or at a garage sale.


Browning Pork Loin

Browning a boneless pork loin is so easy. Just kosher or sea salt, olive oil, bacon grease, or lard, and pork! Season it after browning for the best results.


Why are we as a whole, so dern stuck on the value of slow cookers? We “get” they have a convenience factor…you can make dinner and cook it overnight or can put dinner on before work and come home to a nice hot, home cooked meal. But you know, some things just have no business in a slow cooker. There. We said it. Now tar and feather us and rip off the official DFSW Susie Homemaker Decoder Ring why doncha?


Slather Pork Loin with Mustard

Slather the loin in any kind of mustard after browning. Don’t bother measuring it. Just pour it on!


Slow cookers have their place. They work great to keep queso perfectly warm. They are superb at making bone broth and other stocks. They work “ok” with chili and stews and some soups…although we still believe that even set to low, slow cookers cook most foods too dag-burned hot. And if given a choice, we will choose a heavy Dutch oven and a low oven setting any day!


Seasoned Mustard Crusted Pork Loin

Season generously with granulated garlic, black pepper, and dried parsley. The mustard will make it adhere. Then into a 350° oven with a meat thermometer plugged into the thickest portion. 15 minutes a pound give-or-take, roasted to 140° internal temp yields super moist roast.


But for lean meats such as roasts, chicken, whole poultry…well blah on you slow cookers! These cuts were never intended to be subjected to mercilessly high cooking temps with a never ending cooking cycle. These cuts perform best when you cook them to temperature rather than by a clock, using a very stable heat source. Ask anyone who’s bitten into a slice of roast pork that tastes mealy, grainy, and dry as the Sahara Desert about that and see if we’re not keepin’ it real for you.


Mustard Crusted Pork Loin Roasted and Resting

Be sure to rest the roast on a cutting board for 15 minutes before slicing!


This TNT (tried ‘n’ true) family recipe comes down from our WaWa. It’s simple Southern fare. We had pork roasts at least 2 Sundays per month for the first 18 years of my life. So I do know a thing or two about the easy-peasy best method for cooking them. And she passed it along to Mama and Cakki and eventually down to Nannie and me. It just doesn’t get any easier in the most basic preparation: slather a hunk of loin (bone in or bone out) with mustard (any kind), season the bejeesus out of it with granulated garlic, pepper, dried parsley and some salt of some kind (we like kosher salt or coarse sea salt). Brown it in a little olive oil or bacon grease, shove a thermometer into the thickest portion and roast it until the temp reads 140° (about 15 minutes/pound on average when cooked in a preheated 350° oven.)


Scored Boneless Pork Loin

Scoring is an extra little quick thing you can do to make the outside crisper!


In less than an hour, we seasoned the roast, browned it and finished cooking it to yield about 2 1/4 pounds of succulent, tender, drippingly moist roasted pork loin. Sometimes, when the fat cap is really thick, we’ll score it in a diamond patter and that takes an extra minute; but, it’s worth it because the spices get down to the skin and the fat renders better before the meat gets dry-as-old-bones-over-cooked.


Sliced Roasted Mustard Crusted Pork Loin

Low Carb Mustard Crusted Pork Loin is dripping with juices!


Leftover Pork Roast and Tomatoes for Breakfast

Did we mention it makes super leftovers that are great for breakfast?!


We use a nonstick skillet to brown and roast the loin. It’s a one-pot-wonder with super simple clean up. And the payout is that we had a gorgeous Sunday dinner and have over 1 ¾ pounds of roasted pork in the fridge just daring us to make all sorts of things from bánh mì to egg foo yung and beyond.


(Click on the image to purchase from Fluffy Chix Cook's trusted Amazon partner.)

(Click on the image to purchase from Fluffy Chix Cook’s trusted Amazon partner.) Le Creuset pans are a lifetime investment. We adore enameled cast iron skillets. They’re perfect for roasting.



Click to order these nifty nonstick, PFOA free, enameled cast iron pans from the Fluffy's Trusted Amazon Partner.)

Click to order these nifty nonstick, PFOA free, enameled cast iron pans from the Fluffy’s Trusted Amazon Partner.) This is an awesome set – economical, nonstick, and we use it for stove top and oven cooking!


Here are our current enameled cast iron skillet and nonstick skillet crushes!



(click on image to purchase from our trusted Amazon partner.)


And here’s the kind of oven-safe meat thermometer in it’s cheapest derivation. Happy roasting!


Low Carb Mustard Crusted Roasted Pork Loin

Prep Time: 10 minutes

Cook Time: 45 minutes

Total Time: 55 minutes

Yield: 8-10 servings

Serving Size: 3-4 ounces cooked

Calories per serving: 318

Fat per serving: 23g

Low Carb Mustard Crusted Roasted Pork Loin

Low Carb Mustard Crusted Pork Loin is so simple to make, only 3-4 minutes of prep and about 45 minutes of cooking yields meat for a week! Succulently juicy and a well-balanced background to be spiced any way you like as Lucky Leftovers!



  1. Heat nonstick skillet with olive oil over medium high heat.
  2. Season loin with salt. Place in hot skillet and brown on all sides (about 2-3 minutes per side). Remove from heat. Slather pork with mustard on all sides and season generously with garlic, pepper, and dried parsley. (Psssst. We don't even measure the spices.)
  3. Poke an oven-safe thermometer into the thickest portion and roast to 140° internally (about 15 minutes per pound). Remove from oven and rest 15 minutes before slicing.
  4. Fast Method | Slather roast with mustard and season with granulated garlic, kosher or sea salt, freshly ground black pepper and dried parsley. Brown pork loin on the 4 main sides of the roast—about 2-3 minutes per side. Stick an oven-safe meat thermometer into the thickest part of the loin.
  5. Transfer pan to a preheated 350° oven and roast loin until the thickest portion registers 140° internally (in the center of the thickest part). A ball park guestimate is about 12-15 minutes per pound.
  6. Remove roast from pan and rest of a cutting board for 10-15 minutes. Slice thinly and return meat to pan with the drippings and fat. Toss meat with the juices and serve to rave reviews.


This is a super economical meal and filled with great nutrition. Full of flavor and satisfaction, you'd never guess how cheap or easy it is to make a big protein like this. The best part is you have Lucky Leftovers for many other meals such as Pork Egg Fu Young, Teriyaki Pork, Pork Crack Slaw, Tacos Al Pastor, Green Chili, Enchiladas Verdes, Hash, Pork and Fried Cabbage, oh so many different leftovers can be made and let's not forget the basic pork roast sandwich! Holy Moly, hold us please!

Serving Ideas Serve with your favorite veggie or salad!

Nutritional Information Per 3oz cooked serving with pan juices: 318 Calories; 23g Fat (66.4% calories from fat); 25g Protein; 1g Carbohydrate; trace Dietary Fiber; 1g Effective Carbs

Per 4oz cooked serving with pan juices: 397 Calories; 29g Fat (66.4% calories from fat); 32g Protein; 1g Carbohydrate; trace Dietary Fiber; 1g Effective Carbs

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  1. Wow, this sounds GOOD, Susie!!

    Now I want to go buy a pork loin and make this roast! I’ve got everything on hand except the pork roast! Bet this would be a good way to season pork chops too.

    I enjoyed the story you told to go along with the recipe. I’ve loved all the stories!


  2. Hi Susie,

    Just wanted to come back and share another thought to tie in with your speaking of roasts in the post and how maybe the current generation doesn’t have the same appreciation for them that our generation and prior does.

    Yes, I love a good roast! Would rather have roast than steak, if the truth were known.

    I made a beef roast on the medium setting of my electronic pressure cooker today. I know that doesn’t tie in with this post, but that was how I wanted to cook it. I let it go for 90 minutes and it was awesome! I think I tend to cook things longer in my pressure cooker than they might need to. At least when I’ve gone by recipe times, the items never seemed done so I guess this is where I’ve wound up.

    Anyway, when Sis was here at the house tonight she ate some of the roast and we both agreed to our love of roast.

    I love it when she’ll eat some of what I’ve cooked! Sometimes I think she doesn’t want to ‘eat up’ my food, but when she really wants something, like roast or LC ice cream, she’ll partake!!

    Silly to come back and share this, but our little roast exchange reminded me of the story in this blog entry.

    I love warm and fuzzy!!!


    • XOXO! Thank you for sharing your roast story! I love how recipes and food have a way of capturing fond memories of our family. I know many cook roasts in pressure cookers and slow cookers and swear by them! 🙂 You know me though, I’m a rare or square girl. 🙂 If my roasts get well done (other than pot roast), I just can’t bring myself to swallow it! 🙂 But things like beef rags or pulled pork, are surely slow moist cooking applications. I truly don’t get why so many are afraid of “big hunks of meat.” 🙂 More for us! 😉


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