Making a satisfying, low-carb dinner that keeps everyone happy can feel like an uphill battle, especially when you’re juggling work deadlines, after-school activities, and trying to stick to your keto goals. Between the grocery shopping, prep work, and actual cooking time, getting a proper meal on the table often seems like mission impossible.
That’s where this keto crock pot beef brisket comes to the rescue: it’s a hands-off recipe that delivers tender, flavorful meat without any fuss, fits perfectly into your keto lifestyle, and lets you get on with your day while dinner practically makes itself.
Why You’ll Love This Beef Brisket
- Keto-friendly main dish – With minimal carbs and plenty of protein, this brisket fits perfectly into your keto meal plan while delivering amazing flavor.
- Set-it-and-forget-it ease – Just prep your ingredients, place them in the slow cooker, and let it work its magic while you focus on other things.
- Simple ingredients – You only need a handful of basic ingredients to create this flavorful dish – most of which you probably already have in your kitchen.
- Perfect for meal prep – This large cut of meat provides plenty of servings, making it ideal for family dinners or preparing meals for the week ahead.
- Tender, juicy results – The slow cooking process breaks down the tough meat fibers, giving you perfectly tender brisket every time.
What Kind of Brisket Should I Use?
For a crock pot brisket, you’ll typically find two main cuts at the store: the flat cut and the point cut. The flat cut (also called first cut) is leaner and more uniform in shape, making it easier to slice and present nicely on a plate. The point cut has more marbling and fat running through it, which means more flavor but also a less uniform appearance. For this slow cooker recipe, either cut will work well since the long cooking time helps break down the tough muscle fibers. Just make sure to leave a thin layer of fat on top of your brisket – about 1/4 inch is perfect – as this will help keep the meat moist during cooking. When shopping, look for meat with a bright red color and white (not yellow) fat.
Options for Substitutions
Looking to make some swaps in this keto-friendly brisket recipe? Here are some helpful substitutions:
- Brisket: While brisket gives the best results for this recipe, you can use a chuck roast or bottom round roast if needed. Just note that cooking times might need to be adjusted slightly – these cuts may cook a bit faster than brisket.
- Beef stock: You can swap beef stock with chicken stock, or even water mixed with 2 beef bouillon cubes. Bone broth works great too and adds extra nutrients.
- Onion soup mix: To keep it more keto-friendly, you can make your own mix using 2 tablespoons dried onion flakes, 1 teaspoon onion powder, 1 teaspoon garlic powder, and 1 teaspoon celery salt.
- Dijon mustard: Any mustard works here – yellow mustard, whole grain mustard, or even spicy brown mustard. Each will give a slightly different but equally good flavor.
- Brown sugar: For a keto version, skip the brown sugar or use a brown sugar substitute like Swerve Brown or monk fruit golden sweetener in the same amount.
Watch Out for These Mistakes While Cooking
The biggest mistake when cooking brisket in a slow cooker is not searing the meat first – taking just 10 minutes to brown each side creates a rich, flavorful crust and locks in the juices. A common error is lifting the lid too often during cooking, which can add 15-20 minutes to your cooking time each time you peek, so resist the urge to check frequently. For the most tender results, always slice your brisket against the grain (look for the lines in the meat and cut perpendicular to them), as cutting with the grain will result in chewy, stringy meat. To achieve that perfect texture, let the brisket rest for 15-20 minutes after cooking before slicing – this allows the juices to redistribute throughout the meat instead of running out onto your cutting board.
What to Serve With Keto Brisket?
Since this brisket is keto-friendly, you’ll want to pair it with low-carb sides that complement its rich, savory flavors. A simple cauliflower mash makes an excellent substitute for traditional mashed potatoes and works perfectly for soaking up all those tasty meat juices. For some green veggies, roasted Brussels sprouts or asparagus with garlic butter are fantastic options that keep things keto-friendly. If you’re feeding a crowd with mixed dietary needs, you can always offer both regular and cauliflower-based sides – just make sure to label them clearly so everyone knows which is which!
Storage Instructions
Keep Fresh: Your cooked brisket will stay good in the fridge for up to 4 days when stored in an airtight container. Pro tip: keep the meat in its cooking juices to prevent it from drying out – this makes it even better the next day as the flavors continue to develop!
Freeze: This brisket is perfect for freezing! Place portions in freezer-safe containers or bags along with the cooking liquid and it’ll keep for up to 3 months. I like to portion it out before freezing so I can thaw just what I need for a meal.
Warm Up: To reheat, place the brisket and its juices in a covered dish in a 300°F oven until heated through, about 20-30 minutes. You can also warm it up in the slow cooker on low for 1-2 hours. The key is low and slow to keep the meat tender and juicy!
| Preparation Time | 15-20 minutes |
| Cooking Time | 540 minutes |
| Total Time | 555-560 minutes |
| Level of Difficulty | Medium |
Estimated Nutrition
Estimated nutrition for the whole recipe (without optional ingredients):
- Calories: 2000-2200
- Protein: 200-220 g
- Fat: 130-150 g
- Carbohydrates: 30-40 g
Ingredients
For the brisket:
- 2 large onions (peeled and quartered)
- 5 lb beef brisket (fat trimmed to 1/4 inch thick)
- 1/2 cup onion soup mix (I use Lipton Recipe Secrets)
- 1 cup beef stock (I use Pacific Foods organic beef broth)
- 4 tbsp Dijon mustard
For serving:
- 1 tbsp brown sugar (optional, for a touch of sweetness)
Step 1: Prepare the Onions and Broth
Begin by slicing the onions and placing them in the bottom of the slow cooker.
Pour the broth over the onions, ensuring they are well-covered.
This forms a flavorful base for cooking the brisket.
Step 2: Season the Brisket
Place the brisket in a large bowl.
Cover the top and bottom of the brisket with 2/3rds of the onion mixture you prepared.
Place the brisket into the slow cooker with the fat side facing up.
Spread Dijon mustard over the top of the brisket for added flavor.
Sprinkle the remaining 1/3rd of the onion mixture over the top of the brisket.
Step 3: Cook the Brisket
Set your slow cooker to low and cook the brisket for 9 hours.
This method will ensure tender and flavorful meat that absorbs the rich flavors of the onion and broth.
Step 4: Broil the Brisket
Once the brisket is cooked, carefully remove it from the slow cooker and transfer it to a large roasting pan.
If desired, sprinkle brown sugar over the brisket for a sweet caramelized topping.
Place the roasting pan in the top 1/3rd of your oven and turn the broiler on high.
Broil for about 5 minutes, watching closely to prevent burning.
Step 5: Let the Brisket Rest
After broiling, remove the brisket from the oven and set it aside, allowing it to rest for at least 30 minutes before carving.
This rest time helps the brisket retain its juices for increased flavor and tenderness.
Step 6: Make the Sauce
Allow the drippings from the slow cooker to cool completely.
Skim off the fat layer that forms on top and discard it.
Pour the remaining onions and broth into a high-speed blender.
Blend on high for 1-2 minutes until smooth.
Taste the sauce and adjust seasoning with additional salt or pepper, if needed.
Step 7: Serve the Brisket
Slice the rested brisket and pour the blended onion sauce over the top.
Alternatively, place the sauce in a small side bowl for dipping.
Enjoy your delicious, tender brisket with its rich and savory sauce.
