Crockpot Beef Chuck Roast with Mustard Sauce [Recipe]

Slow Cooker Crockpot Beef Chuck Roast & Mustard Sauce Recipe

Crockpot beef chuck roast with mustard sauce is an oldie but goodie. I’ve made it too many times to count, yet failed to share one of my favorite meals here. Why is that? Truth be told, I aim to make all my photos look like food porn. Turns out making slow-cooked beef chuck roast coated in a creamy mustard sauce look sexy is kinda challenging. I have to remind myself we use crockpots for convenience and taste, not aesthetics. While this recipe won’t win me any food photography awards, it will surely earn a regular spot at your dinner table. It’s honestly a favorite of mine.

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Crockpot Beef Chuck Roast in Creamy Mustard Sauce - Low Carb, Keto Friendly, Gluten-Free

How do you make a creamy mustard sauce?

Heavy cream, mustard, garlic powder, onion, celery, and salt cook low and slow in the crockpot to develop a rich, creamy mustard sauce. As the beef cooks, the juices spill into the sauce to create a savory depth of flavor that is out of this world, lick-your-plate-good.


What to choose instead of stew meat?

Instead of the mixed cuts of stew meat, purchase a beef chuck roast and cut it into bite-sized pieces yourself. This small step will guarantee your meat cooks evenly throughout and that every bite is fork-tender. It’s usually about the same price either way, but stew meat can be a bit of a mixed bag. Beef chuck roast is a sure-fire winner in the crockpot!

What to choose instead of stew meat? How do you make a creamy mustard sauce? Keto, Low Carb, Crockpot recipe

How long do you cook beef chuck roast in the crockpot?

Since beef chuck roast is such a tough cut of meat, it’s best to cook it low and slow. Cover your crockpot and cook on low for 8 to 10 hours and the meat will be perfectly tender and juicy. Slow and steady wins the race!

If you’re short on time, you can cook at higher temperatures for shorter periods, but the results aren’t nearly as good.

How long do you cook beef chuck roast in the crockpot?

Looking for more keto beef recipes? Try my beef cabbage soup or tomatillo chili recipes!

Crockpot Beef Chuck Roast with Mustard Sauce Recipe

Slow Cooker Crockpot Beef Chuck Roast & Mustard Sauce Recipe

Crockpot Beef Chuck Roast with Mustard Sauce

The slow cooker transforms the tough beef chuck roast cut into tender bites coated in a creamy mustard sauce
Prep Time: 10 minutes
Cook Time: 6 hours
Total Time: 6 hours 10 minutes
Course: Dinner, Lunch, Main Course, One pot meal
Cuisine: American
Special Diet: Gluten-Free
Servings: 8 Servings
Calories: 364kcal
Author: Tasha Metcalf



  • Combine heavy cream, yellow mustard, garlic powder, and salt in a crockpot.
  • Add beef chuck roast, celery, and onion to the crockpot and mix ingredients thoroughly. 
  • Cover and cook on high for 4 hours, medium for 6 hours, or low for 8 hours.


Calories: 364kcal | Carbohydrates: 1g | Protein: 33g | Fat: 25g | Saturated Fat: 11g | Cholesterol: 136mg | Sodium: 506mg | Potassium: 623mg | Vitamin A: 275IU | Vitamin C: 0.8mg | Calcium: 47mg | Iron: 3.6mg
Tried this recipe?Mention @KETOGASM or tag #ketogasm!


  • I’m not one of your “babes”, just an old guy trying low carb for the second time. Last time was close to thirty years ago. Anyway, trying this crock pot beef recipe. It’s been cooking about two hours and smells great. Thanks for the recipe.

  • I tried this recipe and it was incredible. Since I began Keto I’ve not found a delicious gravy recipe to serve over mashed cauliflower. That is until now
    Thank you!

    • 5 stars
      Just an update. I’ve added 1 cup of califlower florets(no stems) to the crock pot and once cooked down the gravy was super thick and hearty. This was ketogasmic over mashed califlower. This recipe has become weekly dinner in my house. Thanks again!

  • We did this in the Breville fast slow cooker (pressure cooker with slow cooker option). I dont know if it is because of the device we used or what, but all the rendered fat filled the pot heaps and was significantly more prevalent than the mustard sauce. Is there something that you do to get around this?

  • Just got this in the crockpot, I can’t wait to try it! Going to serve it over mashed cauliflower, with roasted Brussels sprouts on the side.
    Always love finding a new Keto Recipe, thanks for sharing.

    *I decided to brown the meat and onions a bit before adding them. Such a good opportunity to add even more flavor!

  • This is the first time using your recipe, and just before I put in the mustard powder, realized it was the “prepared mustard” that was required, not powder mustard. Big difference.

  • 5 stars
    I made this as called for and was wonderful!!!! Next time a added green beans and horseradish and loved it too!! Thanks so much!

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