Slow Cooker Maple Mustard Corned Beef
There’s something truly comforting about a slow-cooked meal, especially when it involves tender, flavorful corned beef. Slow Cooker Maple Mustard Corned Beef brings a delightful twist to a classic favorite, combining sweet maple syrup with tangy mustard for an irresistible glaze. The best part? It practically cooks itself while you enjoy the delightful aromas wafting through your home, creating a warm and inviting atmosphere.
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This dish is perfect for gatherings or simply treating yourself on a cozy weekend. With just a little prep time and a hands-off cook time, you can savor a richly flavored meal that feels gourmet yet is incredibly simple to prepare. Whether served with mashed potatoes, carrots, or fresh cabbage, this dish promises satisfaction with every bite. I can’t wait for you to try this recipe; it’s one that warms the heart as much as the stomach!
Why You’ll Love This Recipe
- Simple & Quick: With just 20 minutes of prep time, you’ll set it and forget it for hours!
- Irresistible Flavor: The sweet and tangy combination creates a mouthwatering experience you’ll crave.
- Eye-Catching Appeal: The glossy finish from the maple-mustard glaze makes for an impressive presentation.
- Flexible Serving: Perfect for Sunday dinners or as a make-ahead option for busy weekdays.
- Diet-Friendly Options: Feel free to customize the sides to fit dietary preferences, like using gluten-free options.

Ingredients You’ll Need
- 3 lb. flat cut corned beef roast: A flavorful cut that becomes incredibly tender in the slow cooker. Avoid using the spice packet for a cleaner taste.
- 2 tsp. cooking oil: This helps create a golden crust when browning the meat, enhancing flavor.
- ½ cup maple syrup: Provides sweetness that balances out the mustard’s tang. Look for pure maple syrup for the best taste.
- ¼ cup yellow mustard: Adds a zesty kick and balances the sweetness of the maple syrup.
- ¼ tsp. black pepper: A subtle seasoning that enhances the overall flavor.
- 2 garlic cloves, minced: Fresh garlic adds depth and aromatic qualities to the dish.
How to Make Slow Cooker Maple Mustard Corned Beef
Rinse and Prepare: Rinse the corned beef roast under cold water, then pat it dry with paper towels. This helps to remove excess salt, ensuring the flavors are balanced in the final dish.
Brown the Meat: Heat a large skillet over medium-high heat and add 2 teaspoons of cooking oil. Once the oil is hot, carefully place the corned beef in the skillet and sear it on all sides until it develops a beautiful golden-brown crust. This step locks in the juices and adds flavor.
Transfer to Slow Cooker: Gently lift the browned corned beef and transfer it to your slow cooker. This is where the magic happens, and the meat will become fall-apart tender.
Mix the Sauce: In a small bowl, mix together ½ cup of maple syrup, ¼ cup of yellow mustard, ¼ teaspoon of black pepper, and 2 minced garlic cloves. Stir until combined, and then pour this luscious sauce evenly over the corned beef in the slow cooker.
Cover and Cook: Securely cover the slow cooker and set it to cook on LOW for 7 hours. Resist the urge to open the lid during cooking; this allows the meat to fully absorb the flavors and become incredibly tender.
Serve with Sides: Once the cooking time is up, carefully remove the corned beef from the slow cooker and slice it against the grain. Serve it with your choice of sides; I recommend fluffy mashed red potatoes, steamed carrots, and cabbage for a true comfort meal.

Storing & Reheating
To store leftovers, place the corned beef in an airtight container and refrigerate for up to 4 days. If you have a larger batch, you can freeze portions in freezer-safe containers for up to 3 months. When you’re ready to enjoy it again, reheat in the microwave or a low oven until warmed through. Keep in mind that the texture may change slightly after freezing, so drizzling a bit of warm liquid from the slow cooker can help refresh its moisture.
Chef’s Helpful Tips
- Avoid overcooking the meat by sticking to the recommended cooking time.
- For a richer flavor, let the corned beef rest for a few minutes after cooking before slicing.
- If you prefer a bit of heat, try adding a pinch of red pepper flakes to the sauce.
- Don’t skip the browning step; it adds so much flavor.
- This dish makes great leftovers for sandwiches; consider making a hearty Reuben!
There’s nothing quite like the savory-sweet taste of Slow Cooker Maple Mustard Corned Beef to bring joy to your dining table. The satisfying aroma fills your kitchen, inviting friends and family to gather around. Enjoy the deliciousness and don’t hesitate to share this recipe with others; it truly feels special whether it’s a casual weeknight meal or an impressive dinner for guests.
Recipe FAQs
Can I use a different cut of beef?
While flat cut corned beef is recommended for its tenderness, you can substitute a brisket. Just be aware that cooking times may vary slightly depending on thickness.
What sides pair well with this dish?
Mashed potatoes, steamed carrots, and cabbage make excellent companions to this dish. You could also serve it with crusty bread or a light salad for a more balanced meal.
Can I prepare this dish ahead of time?
Absolutely! You can prepare the corned beef and sauce the night before, store them separately in the fridge, and cook them in the slow cooker the next day.
How can I enhance the flavors?
Experiment with additional herbs and spices, such as thyme or rosemary, to elevate the dish. A splash of apple cider vinegar can add a nice tang, too!
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📖 Recipe Card

Slow Cooker Maple Mustard Corned Beef
- Prep Time: 20 minutes
- Cook Time: 440 minutes
- Total Time: 7 hours 40 minutes
- Yield: 8 1x
- Category: Main Dishes
- Method: Slow Cooker
- Cuisine: American
Description
This Slow Cooker Maple Mustard Corned Beef is a delicious blend of sweet and tangy flavors, perfect for an effortless dinner. With simple prep and juicy corned beef, it’s sure to please everyone at the table.
Ingredients
- 3 lb. flat cut corned beef roast, ditch the spice packet
- 2 tsp. cooking oil
- ½ cup maple syrup
- ¼ cup yellow mustard
- ¼ tsp. black pepper
- 2 garlic cloves, minced
Instructions
- Rinse and pat the corned beef dry with a paper towel.
- Heat a large skillet over medium-high heat and add cooking oil to coat the pan.
- Brown the meat on all sides in the hot oil.
- Transfer the browned corned beef to the slow cooker.
- In a separate small bowl, mix maple syrup, yellow mustard, black pepper, and minced garlic.
- Pour the sauce mixture over the corned beef in the slow cooker.
- Cover and cook on LOW for 7 hours without opening the lid.
- Serve with side dishes of choice, such as mashed potatoes, steamed carrots, and cabbage.
Notes
Ensure the corned beef is patted dry for better browning.
Serve with vegetables of your choice for a complete meal.
This dish pairs well with mustard or horseradish on the side.
Nutrition
- Serving Size: 1 slice
- Calories: 350
- Sugar: 22g
- Sodium: 890mg
- Fat: 16g
- Saturated Fat: 5g
- Unsaturated Fat: 10g
- Trans Fat: 0g
- Carbohydrates: 29g
- Fiber: 0g
- Protein: 26g
- Cholesterol: 80mg
