Dinner · Part 1 of 3: Ingredients
Crockpot Mushroom Butter Pork Shoulder: Dump-and-Go

- Prep
- Cook
- Total
- Serves
- 8
This Crockpot mushroom butter pork shoulder is the definition of set-it-and-forget-it cooking. A 4-pound pork shoulder roast gets dusted with onion soup mix, surrounded by cremini mushrooms, and topped with a whole stick of salted butter.
Then the slow cooker does the work, turning it into tender, shreddable meat in a rich, savory sauce. No searing, no stirring, no fuss—just dump everything in and walk away.
This recipe is built around a simple formula: pork shoulder, onion soup mix, mushrooms, and butter. The slow cooker melts everything together over several hours, breaking down the pork's connective tissue until it falls apart at the touch of a fork.
The butter emulsifies with the meat juices and the soup mix to create a glossy, golden pan sauce that coats every strand of pork. It's the kind of meal that fills the house with an irresistible aroma and makes everyone gather around the table. Serve it over mashed potatoes or with crusty bread to soak up every last drop.
Ingredients
- 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)
Why this recipe works
Pork shoulder, also called Boston butt, is a well-marbled cut that becomes meltingly tender when cooked low and slow. The collagen in the meat breaks down into gelatin, which gives the pulled pork its silky texture and rich mouthfeel. Cooking it in a slow cooker at a gentle temperature allows this transformation to happen without any attention from you—just set the timer and let the heat do the work.
The combination of dry onion soup mix and salted butter is a classic flavor powerhouse. The soup mix delivers savory onion and herb notes, while the butter adds richness and helps carry the flavors into the meat.
The mushrooms soak up the buttery jus as they cook, becoming soft, earthy, and utterly delicious. The result is a sauce that tastes complex and luxurious, even though it comes from just a few simple ingredients.
Notes and substitutions
Choose a pork shoulder roast with good marbling—this ensures moist, flavorful meat after hours of cooking. If your roast is larger or smaller, adjust the cooking time accordingly.
The dry onion soup mix is a pantry staple that adds instant savory depth; look for one without added MSG if you prefer. Cremini mushrooms are baby bellas, and they hold their shape better than white button mushrooms, but either works.
You can use unsalted butter and add a pinch of salt, but salted butter is the easiest way to season the dish as it melts. For a dairy-free version, substitute olive oil. This recipe is naturally gluten-free if you choose a gluten-free onion soup mix—check the label, as some brands contain wheat. The slow cooker should be at least 6 quarts to fit the roast comfortably.
- salted butter: unsalted butter plus 1/4 teaspoon salt, or 1/2 cup olive oil for a dairy-free version
- dry onion soup mix: 1 tablespoon onion powder, 1 teaspoon garlic powder, 1 teaspoon dried parsley, and 1/2 teaspoon salt
- cremini mushrooms: white button mushrooms or baby bella mushrooms
- boneless pork shoulder: bone-in pork shoulder (cook time may be slightly longer; remove bone before shredding)
Equipment
- 6-quart slow cooker
- Cutting board
- Chef's knife
- Serving spoon
- Tongs or forks for shredding
- Plate for serving
Up next · Part 2 of 3
6 steps · 8 h of cooking · what to look for at each stage
Step-by-step instructions (Part 2)