It was time to try out a crock pot pork butt roast, also known as a Boston butt roast with mushroom gravy, as I have been trying out all sorts of mushroom gravy dishes lately. Put this in the crock pot and come home to a hot, delicious supper at the end of a busy day.

Pork Butt Roast/Boston Butt Roast with Mushroom Gravy
Pork Butt Roast/Boston Butt Roast with Mushroom Gravy

How to Cook a Pork Butt Roast AKA Boston Butt Roast

Pork butt roast, also referred to as a Boston butt roast,  is a tougher piece of meat that comes from higher on the shoulder of the hog, above the shoulder blade area and has lots of marbled fat. As with any cut of meat that comes from a muscle that is used more, it takes time to break down the meat fibers in this cut of pork. A Boston butt is usually what you want to use in pulled pork as well.

Cooking a pork butt roast in the crock pot is the best way to cook this cut of pork. It’s a cut that takes a long time to break down and you end up with a deliciously tender, juicy pork Boston butt roast by the time you are done. I have been trying out all sorts of recipe that have mushroom gravy in them, so if you are looking for some more mushroom ideas try my crock pot meatballs that have a creamy mushroom gravy or my very popular Creamy Mushroom Beef Chuck Roast recipe. 

Pork butt roasts are the best cuts of pork to cook low and slow all day long. As you can see in the photo below, once the pork roast has cooked all day, it breaks down into the most tender piece of pork you will ever eat. Look at how the fork just pulls it apart!  Not only that, with this Boston butt roast recipe you are also making a delicious gravy at the same time that can be thickened when the pork roast is done cooking,  I love a good meal that is an all in one!

Tips and Tricks for Cooking a Pork Butt Roast or Boston Butt Roast

  • A slow cooker is the way to go! You can also use a pressure cooker to make this but since I have not personally tried it in my Instant Pot, I’m not going to give instructions on how to do that yet. On my list of things to do!
  • Pick a Boston butt roast that has nice fat marbled throughout it. This is what is going to keep the roast juicy and tender when you are cooking it all day long.
  • This recipe doesn’t have any dairy in it like my other creamy mushroom sauces do, but you can take a look at those other recipes I mentioned and make a creamy sauce at the end.
  • Make sure to coat the pork well with the spices in the recipe!
  • I didn’t sear the roast before I put it into the crock pot as I wanted all of the spices to stay on top. You could sear it if you wanted.

Happy cooking everyone! Hope my fellow mushroom lovers are excited about another delicious mushroom recipe!




How to cook a pork butt roast, also known as a Boston butt roast, in your crock pot with a delicious mushroom gravy to enjoy as well. #pork #crockpot #slowcooker #mushrooms

5 from 1 vote
Pork Butt Roast/Boston Butt Roast with Mushroom Gravy
Prep Time
10 mins
Cook Time
8 hrs
Total Time
8 hrs 10 mins

How to cook a pork butt roast, also known as a Boston butt roast, in your crock pot with a delicious mushroom gravy to enjoy as well.

Course: Main Course
Cuisine: American
Keyword: Boston Butt, pork butt
Servings: 6
Calories: 323 kcal
Author: Karlynn Johnston
  • 3-4 lbs pork butt roast also known as a Boston butt roast
  • 1 tbsp minced garlic
  • 1 tsp dried thyme
  • 1 tsp dried sage
  • 2 teaspoons sea salt flakes
  • 1 teaspoon pepper
  • 3-4 cups white or cremini mushrooms sliced
  • 1 large white onion peeled and cut into quarters
  • 1 1/2 cups chicken broth
  • 2 bay leaves
  1. Pat the pork butt roast dry with paper towels. Place in the bottom of your slow cooker. 

  2. Take thyme, sage, minced garlic, salt and pepper and sprinkle onto the roast in an even layer.

  3.  Arrange the mushrooms and onions around the roast in an even layer. Pour the chicken broth into the bottom of the slow cooker. 

  4. Place the lid on top and cook the roast on low for 7-8 hours. 

  5.  To make the mushroom gravy, transfer the roast to a serving platter and cover with foil to keep hot. Remove the bay leaves and if wanted, the large pieces of onion ( I leave them in though.)

  6. Whisk together 2 tbsp of cornstarch with 1/3 cup of water. Slowly whisk into the mushroom mixture in the bottom of the crock pot until it's smooth and creamy. You may not have to use all of the mixture, just add enough to bring it to the desired consistency.

  7.  Slice the roast and serve with the gravy on top. 

Recipe Notes

Nutritional data will vary based on the size of roast and brand of ingredients used.

You can cook a larger roast if wanted for this recipe as well. Leftovers are great!


Nutrition Facts
Pork Butt Roast/Boston Butt Roast with Mushroom Gravy
Amount Per Serving
Calories 323 Calories from Fat 81
% Daily Value*
Total Fat 9g 14%
Saturated Fat 2g 10%
Cholesterol 142mg 47%
Sodium 1104mg 46%
Potassium 1074mg 31%
Total Carbohydrates 4g 1%
Sugars 1g
Protein 52g 104%
Vitamin C 8.4%
Calcium 2.7%
Iron 10.5%
* 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. Stephanie from VT Reply

    This sounds DElicious! I love the simplicity- sometimes recipes go overboard with too much extra stuff. I don’t have a crock pot so I’m adjusting and attempting this in the pressure cooker! I’ll let you know how it goes! Thanks!

  2. Can you do this with a bone-in Boston butt? How would it affect the cook time/technique?

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