Slow Cooker Beef with Mushroom Gravy is incredibly easy. You sear the beef, dump everything in, and walk away. Eight hours later dinner is ready and your house smells incredible. Cooking has never felt more like cheating.
This Slow Cooker Beef with Mushroom Gravy is the kind of recipe that makes people think you spent the whole day in the kitchen when really you spent about 15 minutes in the morning and then went about your life like a person with nothing to prove. Tender chunks of beef chuck slow cooked in a rich mushroom gravy made with beef broth, Worcestershire sauce, and soy sauce until the whole thing is so deeply savory and comforting that you will want to serve it every single week from now until the end of time.
Spoon it over mashed potatoes and we are talking about one of the best dinners you can put on the table with almost zero active effort. That is the whole promise of the slow cooker and this recipe delivers on it completely.
Why We Sear the Beef First
We know. The whole appeal of slow cooker recipes is that we do not have to stand over a hot pan. And yet here we are, asking you to stand over a hot pan for five minutes before you get to do nothing for eight hours. Here is why it is worth it.
When beef hits a screaming hot skillet, the Maillard reaction kicks in and creates hundreds of new flavor compounds on the surface of the meat. Those browned edges and caramelized bits are pure concentrated flavor that slow cooking alone cannot replicate. Beef that goes into a slow cooker raw comes out gray and tender. Beef that goes in seared comes out tender and tastes like something you meant to make. The difference is not subtle. Five minutes of standing, eight hours of not standing. That is a trade we are very happy to make.
What Every Key Ingredient Is Doing
- Beef chuck. The right cut for this recipe and not negotiable if you want the right result. Chuck is heavily marbled with fat and connective tissue that breaks down over a long slow cook into gelatin, which is what makes the beef tender enough to fall apart and the gravy rich and silky. A leaner cut like sirloin will dry out and turn stringy. Use chuck.
- Beef broth plus a bouillon cube. Two sources of beef flavor instead of one. The broth provides liquid volume and background flavor. The bouillon cube adds a concentrated depth that broth alone cannot match. Together they build a gravy base that tastes like it has been reducing for hours. Which, to be fair, it has.
- Worcestershire sauce and soy sauce. Both are doing the same job from slightly different angles. Worcestershire brings a tangy, complex umami with hints of tamarind and vinegar. Soy sauce adds a deeper, saltier savory note. Together they layer the gravy in a way that makes people ask what is in this and then look slightly surprised when you tell them.
- Cornstarch slurry. Added in the last 20 minutes to thicken the gravy from a thin brothy liquid into something that actually coats the beef and clings to mashed potatoes. Mix the cornstarch with cold water first, always, or you will have lumps and nobody wants that.
Pro Tip: Do not lift the lid while the slow cooker is running. Every time we open it we release heat and add roughly 20 to 30 minutes to the cook time. The slow cooker is not a pot we need to check on. It knows what it is doing. Leave it alone and go live your life.
How To Make Slow Cooker Beef With Mushroom Gravy
Heat the olive oil in a large skillet over medium high heat until shimmering. Add the beef chuck in a single layer and sear for 3 to 4 minutes without moving it until a deep golden brown crust forms. Work in batches if needed. Do not crowd the pan or the beef will steam instead of sear. Transfer the browned beef to the slow cooker.
Add the diced onion, sliced mushrooms, beef broth, Worcestershire sauce, soy sauce, bouillon cube, garlic powder, salt, and pepper to the slow cooker. Stir everything together. Cover and cook on Low for 6 to 8 hours or High for 4 hours until the beef is fork tender and falling apart.
In a small bowl, whisk together the cornstarch and cold water until smooth. Stir the slurry into the slow cooker, replace the lid, and cook for another 20 minutes until the gravy has thickened. Serve over mashed potatoes, rice, or egg noodles.
When Things Go Sideways
The gravy is too thin: The cornstarch slurry needs more time or more cornstarch. If after 20 minutes the gravy is still thinner than you want, mix another tablespoon of cornstarch with a tablespoon of cold water and stir it in. Give it another 15 minutes with the lid on. Also make sure the cornstarch was mixed with cold water before going in. Hot water activates it too fast and creates lumps, which is a whole separate problem.
The beef is still tough after 8 hours: This almost always means the slow cooker is running cooler than it should be, or the beef pieces were cut too large. Give it another hour on Low and check again. Beef chuck needs time and it will eventually surrender. If it is still tough, crank it to High for the last hour. The connective tissue just needs more time to break down and there is no shortcut for that.
Storing and Reheating
Fridge: This Slow Cooker Beef with Mushroom Gravy keeps in an airtight container in the fridge for up to 4 days and honestly tastes even better on day two once the flavors have had time to settle in and get to know each other.
Reheating: Reheat in a saucepan over medium low heat with a splash of beef broth to loosen the gravy.
Freezer: It also freezes beautifully for up to 3 months. Thaw overnight in the fridge and reheat gently. This is an excellent meal prep recipe and a great reason to own a slow cooker if you needed one.
Try These Recipes Next
- Slow Cooker Salisbury Steak Meatballs
- Slow Cooker Beef Barley Soup
- Maple Mustard Meatballs
- Slow Cooker BBQ Pulled Pork
- Slow Cooker Chicken And Dumplings
Slow Cooker Beef with Mushroom Gravy
Ingredients
- 2 pounds beef chuck, cut into cubes
- 2 tablespoons olive oil
- 1 small onion, diced
- 2 cups cremini mushrooms, sliced
- 2 cups beef broth, low sodium
- 2 tablespoons Worcestershire sauce
- 1 tablespoon soy sauce, low sodium
- 1 teaspoon garlic powder
- 1 beef bouillon cube
- ½ teaspoon salt
- ½ teaspoon black pepper
- 2 tablespoons cornstarch
- 3 tablespoons water
Instructions
- Heat 2 tablespoons olive oil in a large skillet over medium high heat. Add 2 pounds cubed beef chuck and sear the beef for 3 to 4 minutes until browned on the outside.
- Transfer the browned beef to the slow cooker. Add 1 diced onion and 2 cups sliced mushrooms to the slow cooker. Pour in 2 cups beef broth, 2 tablespoons Worcestershire sauce, and 1 tablespoon soy sauce. Add 1 beef bouillon cube, 1 teaspoon garlic powder, ½ teaspoon salt, and ½ teaspoon black pepper. Stir everything together.
- Cover and cook on Low for 6 to 8 hours or High for 4 hours until the beef is tender.
- In a small bowl, mix 2 tablespoons cornstarch with 3 tablespoons water to make a slurry. Stir the cornstarch mixture into the slow cooker, cover, and cook for another 20 minutes until the gravy thickens.
- Serve over mashed potatoes, rice, or egg noodles.
Recipe Notes
- Do the sear and do not rush it. Five minutes of standing over a hot pan is the entire difference between beef that tastes flat and gray and beef that tastes like something worth making again. Get the oil shimmering, leave the beef alone for a full 3 to 4 minutes per side, and do not crowd the pan. Brown in batches if you need to. The slow cooker will take care of everything else for the next 8 hours.
- Mix the cornstarch with cold water before it goes in. Always cold water, never hot. Hot water activates the cornstarch before it has a chance to disperse evenly and you end up with lumps in the gravy. Whisk it into cold water first until completely smooth, then stir it into the slow cooker. Twenty minutes later the gravy will be thick, glossy, and exactly what we are going for.
- Do not lift the lid while it cooks. Every time we open the slow cooker we release heat and add 20 to 30 minutes to the cook time. The slow cooker does not need us checking in on it. It is fine. We are the ones with the problem. Leave it alone, go do something else, and come back to a finished dinner like the genius we are.
Nutrition Information
Questions We Get Asked
Technically yes. The beef will still cook through and become tender and the gravy will still taste good. But skipping the sear means skipping the Maillard reaction and all the flavor that comes with it. The dish will taste noticeably flatter and the beef will be gray instead of golden. We strongly recommend doing the sear. It is five minutes of effort that pays off for eight hours of cooking.
Chuck is the best cut for this recipe because of its fat and connective tissue content. Brisket also works well with similar results. Stew meat sold pre-cut at the grocery store is usually chuck or a chuck blend and is a perfectly fine shortcut. Avoid anything labeled lean or extra lean. Lean beef in a slow cooker is a disappointment that cannot be fixed by the gravy, no matter how good the gravy is.
Low for 8 hours gives you more tender, more flavorful beef with a richer gravy. The longer, slower cook gives the connective tissue more time to break down into gelatin and the flavors more time to develop. High for 4 hours gets you to a good result faster when you are short on time. Both work. Low is better if you have the option.
Yes and it is a good idea. Carrots and potatoes added at the start will be fully cooked and tender by the time the beef is done. Peas or green beans should go in during the last 30 minutes or they will turn to mush. If you add potatoes you can skip serving it over mashed potatoes separately, which means one less thing to make. We call that a win.
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