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

Before you start

Before starting, pat the pork dry with paper towels and season lightly with salt and pepper if desired. Slice the portobello mushrooms thickly—about 1/2-inch thick—so they don't disintegrate during cooking.

Mince the garlic if using fresh. Measure the gravy and cut the butter into small pats. No need to brown the meat; the slow cooker does all the work. Have a cutting board and two forks ready for shredding later.

Instructions

Layer and Set

1. 1Layer the Roast and Mushrooms
   Place the pork sirloin roast in the center of the slow cooker. Arrange the thickly sliced portobello mushroom caps over and around the roast. Sprinkle the minced garlic evenly over the top.
   Look for The roast sits snugly in the pot, mushrooms covering the top.
   Tip If the roast is larger than the pot, trim it slightly to fit, but keep the pieces thick.
2. 2Pour Gravy and Add Butter
   Pour the savory brown gravy over the roast and mushrooms. Dot the top with the pats of unsalted butter. Do not stir; the layers will meld during cooking.
   Look for The gravy coats the roast and mushrooms, with butter pats visible on top.
   Tip Using cold butter straight from the fridge helps it melt slowly, enriching the sauce.

The slow cooker is filled with the pork roast, topped with mushroom slices and garlic, then doused in brown gravy with butter pats on top. The raw ingredients look vibrant and promising.

Before covering, ensure the gravy reaches about halfway up the roast; if not, add a splash of broth or water. The lid fits snugly, and the cooker is set to LOW.

Slow-Cook and Shred

3. 3Slow-Cook Until Fork-Tender
   Cover the slow cooker and cook on LOW for 8 to 10 hours, or on HIGH for 4 to 5 hours, until the pork is fork-tender and easily shreds. The mushrooms should be very soft and the gravy deeply flavored. Let it rest for 3 minutes before slicing.
   Look for The meat pulls apart easily with a fork; the gravy is bubbling and aromatic.
   Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
   Tip Avoid opening the lid during cooking to keep the heat steady. If using HIGH, check at the 4-hour mark.
4. 4Shred the Pork
   Transfer the roast to a cutting board. Use two forks to shred the meat into bite-sized pieces, discarding any large fat chunks. Return the shredded pork to the slow cooker and stir gently to coat with the gravy. Let it rest for 3 minutes before slicing.
   Look for The meat is tender and pulls apart into moist strands.
   Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
   Tip For extra flavor, let the shredded pork sit in the gravy for 10 minutes before serving.

After hours of gentle bubbling, the kitchen smells of rich, savory gravy. The pork is fork-tender, shredding effortlessly into moist strands. The mushrooms have softened and absorbed the sauce. The gravy is deep mahogany and glossy. Before shredding, let the meat rest for a few minutes, then return it to the pot to soak up the flavors.

Serve

5. 5Serve and Enjoy
   Spoon the shredded pork and mushrooms onto plates or into slider buns. Serve hot, with extra gravy spooned over the top if desired.
   Look for Steaming pork and mushrooms in rich brown gravy, ready to serve.
   Tip For a low-carb option, serve over cauliflower mash or steamed greens.

The shredded pork and mushrooms are piled high on plates or slider buns, with extra gravy spooned over the top. Steam rises from the dish, promising a warm, satisfying meal. The texture is tender and juicy, the flavor robust and comforting. Serve immediately, perhaps with a side of crusty bread to mop up every last bit of sauce.

Common mistakes

One common mistake is lifting the lid too often, which releases heat and extends cooking time. Another is using a roast that's too large for the slow cooker, leading to uneven cooking.

Overcooking on HIGH can dry out the meat; stick to LOW for the best texture. Finally, don't skip shredding the meat—it allows the sauce to coat every strand, making each bite flavorful.

How to tell it’s done

The pork is done when it shreds easily with a fork and registers at least 145°F (63°C) on an instant-read thermometer. However, for the most tender results, cook until it reaches 195°F to 205°F (91°C to 96°C) internally—this allows the collagen to break down completely.

The mushrooms should be very soft and the gravy deeply flavored. If the gravy seems thin, remove the lid and cook on HIGH for an additional 20-30 minutes to reduce.

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