4 Ingredient Pork Loin Marinade

Jump to Recipe

This post may contain affiliate links. Read our disclosure policy.

Just 4 ingredients make up this savory pork loin marinade featuring molasses and dijon mustard. Top with bacon and roast in the oven to juicy pork loin perfection!


4 Ingredient Pork Loin Marinade

I’ve never been great at cooking large cuts of meat in the oven. I’m generally a slow cooker kind of girl when it comes to roasts. Fork tender, fall-off-the-bone meat? Yes, please.

But I also enjoy learning new things. Especially when it comes to food.

While I was shopping last week, I saw that boneless pork loins were on sale. I knew I needed to put my big girl pants on and try to actually roast a cut of meat to juicy perfection in the oven.


What You Need to Roast Pork Loin

There were two things I needed to do this. A roasting pan (how did I not have one of these after 18 years of marriage?!) and a oven-safe probe cooking thermometer.

That thermometer? It’s my new favorite kitchen toy. But more on that later.

Easy Pork Loin Marinade

This 4 ingredient pork loin marinade recipe is quick to throw together. It is simply molasses, dijon mustard, white wine vinegar and freshly snipped tarragon. You’ll mix up this easy pork marinade and allow the pork to marinate for at least 3 hours, or even overnight. You want it to soak up all of that savory flavor!

Baking a Pork Loin

When it is time to bake the pork loin, simply place it in a roasting pan and top the pork loin with slices of bacon. This adds flavor and juiciness. Two things I know you want!

Baste the top of the bacon with the molasses marinade.

Next, use a probe thermometer and insert it into the side of the pork roast. The thermometer I use is has a cord that comes out of it and attaches to the display so you can easily read the temperature without opening the oven. My probe thermometer sounds a signal when it reaches 145 degrees. Easy, right?

This pork loin bakes at 325 degrees for about 75-80 minutes. The exact time will depend on the size of your pork loin, which makes the thermometer so important.

Also, use the leftover marinade to baste the pork twice in the first 45 minutes of baking, then throw away the remaining marinade. You’ll want to be sure not to baste the pork loin in the last 30 minutes of baking.


After baking, our pork loin roast turned out moist, tender and oh, so flavorful! It was like a slice of pork steak. My guys loved it and were happy to eat the leftovers for lunches the next few days.


In the end, this 4 ingredient pork loin marinade for baking recipe makes a beautiful presentation.

Serve with a side of Christmas green beans, mashed potatoes and buttery soft rolls.

Give this a try. You may be nervous to roast a pork loin as I was, but you’ve got this. And your family will be impressed!

easy roasted pork loin with bacon
easy roasted pork loin with bacon

4 Ingredient Pork Loin Marinade

5 from 2 votes
4 ingredients make this savory pork loin marinade featuring molasses and dijon mustard. Top with bacon and roast in the oven to juicy pork loin perfection!
Servings 15 people
Prep Time 10 minutes
Cook Time 1 hour 15 minutes
Total Time 1 hour 25 minutes

Email Me This Recipe!
Enter your email and get the recipe sent to your inbox! Plus you’ll get new recipes from us every week.


  • 1/2 cup molassses
  • 1/2 cup Dijon mustard
  • 1/4 cup white wine vinegar
  • 2 tablespoons freshly snipped tarragon
  • 3-4 pound boneless pork loin
  • 1/2 pound bacon


  • In a small bowl, combine the molasses, mustard, vinegar and tarragon. Mix well.
  • Place the pork loin in a baking dish and pour the marinade over the pork loin. Turn to coat.
  • Cover the pork loin with plastic wrap and allow it to marinate for 3-4 hours or overnight.
  • Preheat the oven to 325 degrees.
  • Move the pork loin to a roasting pan.
  • Place the slices of bacon on top of the pork.
  • Brush the marinade on top of the bacon.
  • Insert a probe thermometer into the side of the pork loin.
  • Place the roasting pan in the oven for 75-80 minutes, or until the internal temperature reads 145 degrees. Baste the pork loin with the marinade twice in the first 45 minutes of baking. Stop basting 30 minutes prior to the pork roast being cooked through.
  • When the internal temperature reads 145 degrees, remove the pork loin from the oven and tent aluminum foil over it. Allow it to sit this way for 3-5 minutes.
  • Slice and serve.



You can also cook this pork loin in the slow cooker on low for 8-10 hours or until fork tender.


Calories: 376kcal
Course Main Dish
Cuisine American
Calories 376
About JulieJulie Clark

About Julie Clark

I'm Julie Clark, CEO and recipe developer of Tastes of Lizzy T. With my B.A. in Education and over 30 years of cooking and baking, I want to teach YOU the best of our family recipes.

Get 5 Classic Recipes with a Deliciously Secret Twist

You might also like

Join the Discussion

Notify of

Inline Feedbacks
View all comments

Grandpa Red
5 years ago

5 stars

Sue H
6 years ago

5 stars
Although I didn’t have time to marinade the meat for long, it still turned out delicious. Great recipe!

Kim Navin
7 years ago

When cooking in Slow Cooker, do you place the Pork loin in and then just pour all of the marinade over it? cooking for 8-10 hours?