Crockpot Portobello Dijon Cream Chuck Roast Step-by-step instructions

Before you start

Before starting, pat the chuck roast dry with paper towels and season it generously with salt and pepper. Slice the portobello mushrooms about 1/2-inch thick. Mince the garlic if using fresh cloves.

Measure out the sour cream, Dijon mustard, and au jus so everything is ready to go. No searing or browning is needed—this is a true dump-and-go recipe. Have a 6-quart slow cooker ready, and if you plan to serve over rice, start it before you begin layering the ingredients.

Instructions

Layer and Set

1. 1Layer the Roast
   Place the beef chuck roast in the center of a 6-quart slow cooker. Season both sides with kosher salt and black pepper. Arrange the thickly sliced portobello mushrooms over and around the roast, then sprinkle the minced garlic evenly over the top.
   Look for The roast should sit snugly in the pot, with mushrooms piled over the top.
   Tip If the roast is very thick, cut it into two or three large chunks so it cooks evenly.
2. 2Add the Sauce Base
   Dollop the sour cream and the whole-grain Dijon mustard over the roast and mushrooms. Pour the au jus down the side of the pot, trying not to wash the sour cream and mustard off the top.
   Look for The top of the roast should be streaked with white and yellow dollops.
   Tip Use a spatula to spread the mustard and sour cream if you prefer an even coating.

At the end of this phase, the raw roast is seasoned and covered with mushrooms, garlic, sour cream, mustard, and au jus. The pot looks colorful with white and yellow dollops against the red meat and dark mushrooms. The aroma is fresh and savory. The roast should be centered in the pot, with mushrooms piled on top. The sauce ingredients may not be perfectly spread, but that's fine—they will meld during cooking.

Slow Cook and Shred

3. 3Slow 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 beef is fork-tender and shreds easily. The internal temperature of the thickest part should reach at least 145°F (63°C) for food safety, but it will be much higher after long cooking. Let it rest for 3 minutes before slicing.
   Look for The beef should be so tender that a fork slides in with almost no resistance.
   Safe temperature 145°F (63°C) internal temperature (steaks, chops and roasts)
   Tip Do not open the lid during cooking—each peek adds 20 minutes of cooking time.
4. 4Rest and Shred
   Turn off the slow cooker. Remove the roast to a cutting board and let it rest for at least 3 minutes. Using two forks, shred the beef into large bite-size pieces, discarding any large pieces of fat. Return the shredded beef to the pot with the sauce and mushrooms.
   Look for The beef pulls apart into long, tender strands.
   Tip If the sauce seems thin, leave the pot on WARM uncovered for 15 minutes to reduce slightly.

After 8 to 10 hours on low, the kitchen smells rich and beefy. The sauce is bubbling gently around the edges. The roast is deeply browned and tender, and the mushrooms have softened into silky slices.

The beef shreds easily with a fork, and the sauce has thickened slightly. The pot should be full of tender meat and mushrooms in a creamy, glossy gravy. The internal temperature of the thickest part of the roast is well above 145°F (63°C).

Serve and Enjoy

5. 5Finish and Serve
   Stir the shredded beef and mushrooms into the sauce. Taste and adjust seasoning with salt and pepper. Serve hot over steamed rice, spooning extra gravy over the top.
   Look for The gravy should be thick enough to coat the back of a spoon.
   Tip For a richer sauce, stir in an extra tablespoon of sour cream just before serving.

The shredded beef is mixed back into the sauce, and the gravy coats every strand. The mushrooms are tender and meaty, and the sauce is thick and velvety. When served over rice, the plate looks comforting and hearty. The first bite is rich, tangy, and deeply savory. The beef is so tender it practically melts in the mouth, and the sauce has a pleasant mustard kick balanced by the creaminess of the sour cream.

Common mistakes

One common mistake is opening the slow cooker too often to check on the roast. Every time the lid is lifted, heat escapes and the cooking time increases. Avoid lifting the lid for at least the first 6 hours. Another mistake is using a lean cut like round or sirloin; these will dry out and become tough.

Stick with chuck roast. Also, don't skimp on the sour cream—it's essential for the creamy sauce. If the sauce tastes flat at the end, a pinch of salt or a dash of Worcestershire can brighten it up.

How to tell it’s done

The roast is done when it is fork-tender and shreds easily. The internal temperature should be at least 145°F (63°C) for food safety, but after 8 to 10 hours on low, it will be well above that. The meat should pull apart into long, moist strands without resistance.

The mushrooms should be fork-tender and the sauce should be thick enough to coat the back of a spoon. If the sauce is too thin, leave the slow cooker on warm with the lid off for 15 minutes to reduce.

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