Easy Crockpot Pork Sirloin Roast with Mushroom Gravy Step-by-step instructions

Before you start

Before you start, make sure your slow cooker is clean and ready. There's no need to preheat it or grease it. If your pork roast is tied with butcher's twine, remove it before placing it in the slow cooker.

Pat the roast dry with paper towels, but don't season it with salt — the onion soup mix and gravy provide plenty of sodium. Prepare your ingredients: halve the mushrooms if they're large, and cut the butter into small pats. Have your gravy measured and ready to pour. That's all the prep required for this dump-and-go meal.

Instructions

Layer and Season

1. 1Layer the Roast and Seasonings
   Place the pork sirloin roast in the center of a 6-quart slow cooker. Sprinkle the dry onion soup mix evenly over the top of the roast. Scatter the halved cremini mushrooms around the sides of the roast, tucking them into the corners of the slow cooker.
   Look for The roast is centered with the seasoning and mushrooms surrounding it.
   Tip No need to sear the pork first; the slow cooker does all the work.
2. 2Add Gravy and Butter
   Pour the brown gravy over the roast and mushrooms, making sure the gravy covers the bottom of the slow cooker and coats the roast. Dot the top of the roast with the pats of unsalted butter.
   Look for The gravy pools around the roast and the butter melts into the sauce.
   Tip Use a good-quality gravy for the best flavor, or make your own.

At the end of this phase, your slow cooker contains a centered pork roast dusted with onion soup mix, surrounded by halved mushrooms, with brown gravy pooling around and butter pats melting on top.

The raw pork should look evenly coated, and the mushrooms should be nestled into the liquid. The aroma is savory and inviting, but the real magic hasn't started yet. Check that the roast is centered and the ingredients are evenly distributed before moving on.

Slow Cook and Shred

3. 3Cook Low and Slow
   Cover the slow cooker and cook on LOW for 8 to 10 hours, or on HIGH for 5 to 6 hours, until the pork is fork-tender and easily shreds. The internal temperature should reach at least 145°F (63°C) for safety, but for shredding, cook until it's much more tender. Let it rest for 3 minutes before slicing.
   Look for The meat is falling apart and the gravy is bubbling gently.
   Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
   Tip Cooking on LOW yields the most tender results, but HIGH works in a pinch.
4. 4Shred the Pork
   Once the pork is fork-tender, remove it from the slow cooker to a cutting board. Use two forks to shred the meat into bite-sized pieces, discarding any excess fat. Return the shredded pork to the slow cooker and stir to coat with the gravy and mushrooms.
   Look for The pork shreds easily and is moist and tender.
   Tip For extra flavor, let the shredded pork sit in the gravy for 10 minutes before serving.

After hours of slow cooking, the slow cooker is filled with a bubbling, glossy gravy. The pork is fork-tender and falls apart with the slightest pressure. The mushrooms are soft and have absorbed the rich sauce. The smell is deeply savory and comforting. Before shredding, check that the pork reaches an internal temperature of at least 145°F (63°C). The meat should shred easily with two forks, leaving no large chunks intact.

Serve and Savor

5. 5Serve and Enjoy
   Serve the shredded pork and mushrooms with a generous spoonful of the rich gravy. Pile it onto toasted brioche slider buns or over mashed potatoes, rice, or noodles. Let any leftovers cool for no more than 2 hours before refrigerating.
   Look for The pork is glossy with gravy and the mushrooms are tender.
   Tip This also makes a great filling for tacos or stuffed baked potatoes.

The shredded pork is back in the slow cooker, coated in the mahogany gravy. The mushrooms are scattered throughout, and the sauce is thick enough to cling to the meat. The dish is ready to serve — either piled onto slider buns or spooned over mashed potatoes. The texture is moist and tender, and the flavor is rich and savory. Ensure the pork is heated through before serving, and keep the slow cooker on WARM for serving.

Common mistakes

One common mistake is lifting the lid to check on the roast too often. Each time you open the slow cooker, you release heat and add 20 to 30 minutes to the cooking time. Trust the process and resist the urge to peek. Another mistake is using a lean cut like pork loin and cooking it for too long, which can dry it out.

Pork sirloin is ideal, but if you use a leaner cut, check it earlier. Finally, don't skip shredding the meat before serving — this allows the gravy to coat every piece and makes the dish truly melt-in-your-mouth.

How to tell it’s done

The pork is done when it's fork-tender and easily shreds. The internal temperature should reach at least 145°F (63°C) for food safety, but for the best texture, cook it until it's much more tender — typically after 8 to 10 hours on LOW.

To test, insert a fork into the thickest part of the roast; it should twist easily and the meat should start to pull apart. The gravy should be bubbling gently around the edges and the mushrooms should be soft and deeply browned. Let the meat rest for at least 3 minutes before shredding.

• Steaks, chops and roasts: 145°F (63°C) in the thickest part, then a 3-minute rest