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Dinner · Part 2 of 3: Instructions

Crockpot Mushroom Butter Pork Shoulder: Dump-and-Go Step-by-step instructions

Shredded pork shoulder with mushrooms and butter sauce in a slow cooker
Prep
Cook
Total
Serves
8
Includes 10 min resting

Before you start

Before you start, pat the pork shoulder dry with paper towels if it's wet from the package. There's no need to season it—the onion soup mix and salted butter provide plenty of flavor.

Halve the cremini mushrooms if they're large, and have the onion soup mix and butter ready. You'll also want a clean cutting board for shredding and a couple of forks. No other prep is needed; this recipe is truly dump-and-go.

Ingredients at a glance (4)
  • 4 lb boneless pork shoulder roast (Boston butt)
  • 1 oz dry onion soup mix
  • 8 oz cremini mushrooms, halved
  • 1/2 cup salted butter (1 stick)

Instructions

Build the Base

  1. Layer the Roast
    Place the 4-pound pork shoulder roast in the center of a 6-quart slow cooker insert. 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 between the meat and the walls of the slow cooker.
    Look for The roast sits in the middle with mushrooms nestled around it and soup mix dusting the surface.
    Tip No need to sear the pork first—the slow cooker does all the work, and skipping searing keeps this truly dump-and-go.
  2. Add the Butter
    Place the stick of salted butter directly on top of the seasoned roast. It will melt and baste the meat as it cooks, creating a rich, golden pan jus.
    Look for The butter sits on top of the roast, ready to melt into the meat.
    Tip For even melting, cut the butter into a few pieces before placing it on the roast.

At this point, the raw roast sits in the slow cooker, dusted with onion soup mix and surrounded by mushrooms. The butter is perched on top, ready to melt. The scene is neat and simple—nothing is cooking yet, but the ingredients are perfectly arranged for the slow transformation ahead.

Slow-Cook to Perfection

  1. Slow-Cook Until Tender
    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 mushrooms will soften and the butter will emulsify with the meat juices into a glossy sauce. Let it rest for 3 minutes before slicing.
    Look for The pork is so tender that a fork slides through it with no resistance, and the liquid is bubbling gently.
    Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
    Tip Resist the urge to lift the lid during cooking—each peek lets heat escape and adds time.
  2. Rest the Meat
    Once the pork reaches an internal temperature of at least 145°F (63°C), turn off the slow cooker and let the roast rest in the warm liquid for at least 3 minutes. This allows the juices to redistribute and makes shredding easier.
    Look for The meat rests in the hot liquid, staying moist while the temperature stabilizes.
    Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
    Tip Resting also lets the sauce thicken slightly as it settles.

After hours of gentle bubbling, the kitchen smells of savory onion and butter. The pork is deep brown and fork-tender, and the mushrooms have softened into silky bites.

The liquid around the meat is golden and glossy, with tiny bubbles breaking the surface. The roast is ready to rest and shred.

Shred and Serve

  1. Shred the Pork
    Remove the roast to a cutting board and shred it with two forks, discarding any large pieces of fat. Return the shredded pork to the slow cooker and toss it with the mushrooms and buttery jus so every strand is coated.
    Look for The pork pulls apart into long, tender ribbons, and the sauce coats each piece.
    Tip For chunkier shreds, pull the pork apart gently rather than overworking it.
  2. Serve and Enjoy
    Serve the pork shoulder over mashed potatoes or on its own, spooning extra mushrooms and pan jus over the top. The meat should be steaming and glossy, with the savory butter sauce soaking into whatever it touches.
    Look for The plated pork is moist, tender, and glistening with golden sauce.
    Tip Leftover jus makes a fantastic sauce for roasted vegetables or rice.

The shredded pork is moist and glistening, tossed with the mushrooms and buttery jus. When plated, it steams invitingly, and the sauce pools around it. The texture is tender and rich, with every bite coated in savory flavor.

Common mistakes

One common mistake is lifting the lid to peek—this releases heat and can add hours to the cooking time. Trust the process and keep the lid on. Another mistake is skipping the rest time; letting the meat rest in the liquid keeps it moist and makes shredding easier.

Also, don't trim all the fat from the pork shoulder—the fat renders during cooking and adds flavor and moisture. Finally, don't rush by cooking on high for too short a time; low and slow is the key to tender results.

How to tell it’s done

The pork is done when it's fork-tender and easily shreds apart. To check, insert a fork into the thickest part of the roast—it should twist and pull apart with little resistance. For food safety, the internal temperature must reach at least 145°F (63°C) for whole cuts of pork.

Since the slow cooker cooks low and slow, the meat will likely exceed this temperature, which is fine and makes it even more tender. 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

Coming up in Part 3: common questions

  • Can this recipe be made with a different cut of pork?
  • Can this be made in an Instant Pot or pressure cooker?
  • What if the pork is not shredding easily?
  • Can this recipe be doubled?
  • How can the sauce be thickened?

Also in Part 3: variations (Add Aromatics, Spicy Kick, Herb Infusion, Dairy-Free Option), storage and make-ahead, and the printable recipe card.

Up next · Part 3 of 3

4 variations · storage & make-ahead · 5 answers · printable card

Tips, FAQ & printable recipe (Part 3)← Back to the ingredients (Part 1)