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How to Cook Pork Roast in a Crock Pot

Let slow-cooked deliciousness save dinner with this crock pot pork loin roast! Not only does this juicy and tender cut of meat provide an excellent source of protein, it is also surprisingly easy to prepare.

Are you ready to feel like an amazing chef without breaking a sweat? Then make a trip to the grocery store, grab your slow cooker, and prepare yourself for the most scrumptious and juicy pork loin roast that is just bursting with flavor!

This tender, mouthwatering meal will take only minutes to prep using a few ingredients and some patience as your crock pot works its magic transforming this ordinary cut of meat into something extraordinary!

Collage of photos showing a pork loin roast being cooked in a slow cooker and then the completed meat served on a plate with pork gravy and potatoes.

You can check out my other slow cooker recipes here like this family favorite Ham and Cabbage meal or this budget-friendly easy recipe for crockpot hot dogs and sauerkraut that's great for family dinners or when you're cooking for a crowd like on game day or for a birthday party!

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😋 Why You'll Love This Recipe

large package of pork roast from Costco
  • Pork loin is less expensive than other different cuts of pork and is an easy way to save money on your food budget. I buy a large cut of meat at Costco and then divide it up into 3 meals. I like to use the no fuss recipe in this blog post for one dinner and then the simple recipe for Pineapple Pork Loin and the recipe for Honey Balsamic Pork Loin, available in my Freezer Meal Planner, for the other 2 meals keeping them in the freezer for busy days or any day I don't feel like cooking.
  • While this slow cooker pork loin recipe is perfect for dinner, any leftovers can easily be used for a pork sandwich. Add a little bit of bbq sauce and a side of slaw and you've got yourself another meal.

What to Serve with this Crock Pot Pork Loin Roast

freshly cooked pork loin roast topped with gravy served with Creamy Amish Potatoes on a black plate

🥓Ingredients

Bowl with seasoning used to make a crock pot pork loin roast
  • boneless pork loin roast
  • onions
  • olive oil
  • garlic powder
  • salt
  • paprika
  • black pepper
  • chicken broth

See recipe card for quantities.

📋Instructions

This is an overview of the instructions. Full instructions and nutritional information can be found in the printable recipe card at the bottom of the page.

Overhead view of a black crockpot liner sprayed with cooking spray and topped with sliced onions.
  • Spray crock pot liner with cooking spray or olive oil.
  • Layer sliced onions on the bottom of the crock pot.
Pork loin roast fat side up in a crock pot
  • Place pork roast fat side up on top of onion slices.
Overhead view of a pork loin roast in a crockpot drizzled with olive oil and seasoned with spices prior to cooking
  • Drizzle top of pork roast with olive oil.
  • Combine spices and pat on to top and sides of pork roast.
overhead view of seasoned pork loin roast in crock pot with broth being added before cooking
  • Pour broth around pork roast avoiding top so that you don't knock off any of the delicious seasoning.
overhead view of delicious pork loin roast prepared in the crock pot on a cutting board ready for slicing

Cover and cook on high for 3 to 4 hours or low for 5 to 6 hours until internal temperature registers 145 degrees.

carved freshly cooked pork loin roast on black plate

Remove from crockpot and allow to rest for at least 3 minutes before carving. See notes in the recipe card for additional tips!

freshly cooked pork loin roast topped with gravy served with Creamy Amish Potatoes on a black plate

Top with pork gravy and serve with your favorite side dish!

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Why Slow Cooking is the Best Way to Cook Pork Loin

My favorite way to cook lean meats is in the slow cooker. This gives the protein time to break down and renders a delicious roast that isn't dry.

🍴Substitutions

  • Frozen pork roast / frozen pork loin - You can easily substitute frozen for fresh pork. Simply follow all of the directions regarding seasoning and prep but adjust the overall cooking time to 4 to 5 hours on high or 6 to 7 hours on low heat and use a meat thermometer! Over the summer I started to use The MeatStick and I can't recommend it enough. It cooks everything to a safe temperature and will sound off an alarm if the meat is in the danger zone and could potentially be overcooked so you don't need to guess how much time you need to cook a meal.

🍽 Equipment

The following items will help you to make this recipe successfully.

💭Top tip

Turkey Breast with The MeatStick Probe in it

Since removing the lid from a crock-pot slow cooker releases a lot of heat I prefer to use a thermometer that can be left in place, like The MeatStick throughout the cooking process. It takes the guess work out of selecting the perfect cook time since different crock pots cook at different temperatures. I found that my Hamilton Beach crockpot cooks food much quicker than when I use the slow cooker setting on my Instant Pot so knowing exactly when something is done is the best way to avoid meat that's overcooked or undercooked not only when preparing any frozen meat but it's a good idea for any meat in general.

If you click on the number of servings in the recipe card below ⬇️ you can adjust the measurements up or down for the exact number of servings you need.

If you love this recipe please give it a 5 star rating. ⭐️⭐️⭐️⭐️⭐️

📖 Recipe

Crock Pot Pork Loin Roast

Let slow-cooked deliciousness save dinner with this crock pot pork loin roast! Not only does this juicy and tender cut of meat provide an excellent source of protein, it is also surprisingly easy to prepare.
Print Recipe Pin Recipe Save Recipe
sliced pork roast with gravy and amish potatoes on a black plate
Prep Time:5 mins
Cook Time:4 hrs
Resting Time:15 mins
Total Time:4 hrs 20 mins

Ingredients

  • 3 pound pork loin roast
  • 1 onion sliced
  • 1 tbs olive oil
  • 1 teaspoon garlic powder
  • 1 teaspoon salt
  • ½ teaspoon paprika
  • 1 teaspoon black pepper
  • 2 cups chicken broth you can use any broth or stock you prefer or have on hand

Instructions

  • Spray crock pot liner with cooking spray or olive oil.
  • Layer sliced onions on the bottom of the crock pot.
  • Place pork roast fat side up on top of onion slices.
  • Drizzle top of pork roast with olive oil.
  • Combine spices and pat on to top and sides of pork roast.
  • Pour broth around pork roast avoiding top so that you don't knock off any of the delicious spices!
  • Cover and cook on high for 3 to 4 hours or low for 5 to 6 hours until internal temperature registers 145 degrees. See notes for tips!

Notes

  • Frozen pork roast / frozen pork loin - You can easily substitute frozen for fresh pork. Simply follow all of the directions regarding seasoning and prep but adjust the overall cooking time to 4 to 5 hours on high and 6 to 7 hours on low heat and use a meat thermometer!
  • Cooking temperatures of crock pots / slow cookers can vary greatly so it's best to check the internal temperature of your food on the low end of the time given. The only problem is that when you remove the lid a lot of heat is released which can then add to the cooking time. The best way to monitor the temperature is with a probe, which some slow cookers come with (like this one) or to use The MeatStick. I prefer the second option because I can easily monitor the internal temperature of whatever meat dish I'm cooking whether it be in the slow cooker, the air fryer, the oven, or even the grill. The MeatStick alerts me when my food will be ready via an app on my phone which is great because even if I'm doing laundry or just watching TV I can monitor when I need to start the side dishes or tell everyone to wrap up what their doing and get ready for dinner. You can get all the details here. 
  • When patting the spices on to the roast you can also mix up the spices, add the olive oil, create a paste, and rub that on to the meat. 

As with any of my recipes, calorie counts and nutritional information varies greatly depending on which products you choose to use when cooking this dish.

Nutrition

Serving: 1g | Calories: 251kcal | Carbohydrates: 2g | Protein: 39g | Fat: 9g | Saturated Fat: 2g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Cholesterol: 108mg | Sodium: 593mg | Potassium: 675mg | Fiber: 0.3g | Sugar: 1g | Vitamin A: 12IU | Vitamin C: 1mg | Calcium: 16mg | Iron: 1mg
Servings: 8 servings
Calories: 251kcal
Author: Mary Beth
Cost: $8.00

Food safety

We sometimes take for a granted that we have years (or decades) of cooking experience, that the average visitor may not. Add to, or remove from, the list below with health and safety tips.

  • Cook pork, pork roasts, and pork chops to 145 ºF as measured with a food thermometer. Allow a 3 minute rest time before carving or eating. This will result in meat that is safe to eat, juicy, and tender.
  • Do not use the same utensils on cooked food, that previously touched raw meat
  • Wash hands after touching raw meat
  • Don't leave food sitting out at room temperature for extended periods
  • Never leave cooking food unattended
  • Use oils with high smoking point to avoid harmful compounds
  • Always have good ventilation when using a gas stove

See more guidelines at USDA.gov.

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