Slow Cooker Maple Mustard Corned Beef
There’s something undeniably comforting about a home-cooked meal that simmers away in the kitchen. The tantalizing aroma of Slow Cooker Maple Mustard Corned Beef fills your home with warmth and invites everyone to gather around the table. This dish is not just a meal; it’s an experience. Tender, flavorful corned beef slathered in a sweet and tangy maple mustard sauce creates the perfect balance that everyone will love. Your kitchen will transform into a cozy haven, and you won’t believe how easy it is to prepare!
Table of Contents

I first stumbled upon this recipe on a rainy afternoon when I craved something hearty and satisfying. I loved the idea of preparing something delicious without spending hours in front of the stove. A quick prep time followed by a slow cooking process lets the flavors meld beautifully. Whether you’re hosting a Sunday dinner or simply enjoying a relaxed weeknight meal, this slow cooker delight is sure to impress family and friends alike. I can’t wait for you to give it a try!
Why You’ll Love This Recipe
- Simple & Quick: Just 20 minutes of prep time makes this dish a no-brainer for busy days.
- Irresistible Flavor: A scrumptious harmony of maple sweetness and mustard tang envelops the juicy corned beef.
- Eye-Catching Appeal: The glossy sauce adds a beautiful finish, and can be served alongside colorful veggies for a stunning presentation.
- Flexible Serving: Perfect for weeknight dinners, holiday gatherings, or a cozy Sunday with loved ones.
- Budget-Friendly: A satisfying meal that won’t break the bank, making it an excellent choice for large groups.

Ingredients You’ll Need
- 3 lb. flat cut corned beef roast: This cut is known for its tenderness and flavor, perfect for slow cooking. If you can’t find flat cut, a round cut also works well.
- 2 tsp. cooking oil: Use a neutral oil like canola or grapeseed to help brown the meat without overpowering the flavor.
- ½ cup maple syrup: Real maple syrup brings a depth of sweetness to the dish. Avoid imitation syrup for the best flavor.
- ¼ cup yellow mustard: This adds a zesty tang. Feel free to experiment with Dijon or spicy mustard for a different flavor profile.
- ¼ tsp. black pepper: Just a pinch adds a hint of warmth without overwhelming the sweetness.
- 2 garlic cloves, minced: Fresh garlic brings a wonderful savory aroma and depth to the sauce.
How to Make Slow Cooker Maple Mustard Corned Beef
Rinse and Dry: Rinse the corned beef under cold water, then pat it dry with a paper towel. This step helps remove excess salt, ensuring the final dish isn’t overly salty.
Brown the Meat: Set a large skillet on the stovetop over medium-high heat. Add 2 teaspoons of cooking oil, allowing it to heat until shimmering. Carefully place the corned beef in the hot skillet and brown it on all sides—approximately 4-5 minutes per side. This caramelization adds flavor.
Transfer to Slow Cooker: After browning, place the corned beef into your slow cooker. Don’t worry about the extra juices in the skillet; they will add flavor if you decide to deglaze it later.
Whisk the Sauce: In a small bowl, mix together ½ cup of pure maple syrup, ¼ cup of yellow mustard, ¼ teaspoon black pepper, and the minced garlic cloves. This sauce is what brings your corned beef to life, blending sweetness and tang perfectly.
Pour and Cover: Pour the maple mustard mixture over the corned beef, ensuring it’s well-coated. Cover the slow cooker with the lid, and set it to cook on LOW for 7 hours. Remember, resist the urge to open the lid during cooking—this keeps the heat locked in!
Serve with Sides: After 7 hours, your kitchen will be filled with an irresistible aroma. Remove the corned beef, slice it against the grain, and serve it with your favorite sides—creamy mashed red potatoes, steamed carrots, and buttery cabbage pair beautifully.

Storing & Reheating
Leftover Slow Cooker Maple Mustard Corned Beef can be kept at room temperature for up to 2 hours. After that, transfer it to an airtight container and store it in the refrigerator, where it will stay fresh for about 3-4 days. For longer-term storage, consider freezing it in a freezer-safe container for up to 3 months. To reheat, simply place the slices in a skillet over medium heat or in the microwave for 1-2 minutes, ensuring they’re heated through but staying moist.
Chef’s Helpful Tips
- Avoid Over-Salting: Rinsing the corned beef helps reduce unnecessary saltiness; taste as you go if you’d like to adjust seasoning in the sauce.
- Slicing Techniques: Using a sharp knife, cut the meat against the grain to ensure each slice remains tender.
- Timing is Key: If you’re short on time, cook on high for 4 hours instead, but low and slow yields the best results.
- Enhance Flavor: Add a splash of apple cider vinegar in the sauce for an extra layer of flavor.
- Vegetable Add-Ins: Want to make it a complete meal? Toss in carrots or potatoes in the slow cooker during the last 2 hours of cooking.
This Slow Cooker Maple Mustard Corned Beef delivers on every level—it’s comforting, flavorful, and perfect for a crowd. Whether enjoyed for a special occasion or a cozy night in, you’ll soon find it has a permanent place on your dinner table. Feel free to tweak the seasonings or playing with the sides to match your preferences. Enjoy every bite, and don’t forget to share this recipe with someone you love!
Recipe FAQs
Can I use a different cut of beef?
Absolutely! While the flat cut is recommended for its tenderness, a round cut can work just as well. Just keep an eye on the cooking time, as it may slightly vary depending on the cut.
What can I serve with this dish?
This corned beef pairs wonderfully with creamy mashed potatoes, roasted vegetables, or a crisp salad. Additionally, feel free to get creative with more hearty sides like colcannon or even homemade bread!
How do I store leftovers?
Refrigerate any leftovers in an airtight container for 3-4 days. For longer storage, freeze the slices in a freezer bag, ensuring to remove as much air as possible to prevent freezer burn.
Can I modify the sweetness of the sauce?
Absolutely! If you prefer a less sweet flavor, reduce the amount of maple syrup to 1/3 cup, or replace some of it with additional mustard for more tanginess. Your preference is key!
PrintMore Dinner Recipes
- Sweet Potato Tots
- Turkey Wild Rice Soup
- Crispy Oven-Baked Potato Wedges (Pub Style)
- Cajun Shrimp and Sausage Pasta
- Crispy Hot Honey Feta Chicken
Did You Enjoy Making This Recipe? Please rate this recipe with ⭐⭐⭐⭐⭐ or leave a comment.
📖 Recipe Card

Slow Cooker Maple Mustard Corned Beef
- Prep Time: 20 minutes
- Cook Time: 440 minutes
- Total Time: 7 hours 40 minutes
- Yield: 8 servings 1x
- Category: Dinner
- Method: Slow Cooker
- Cuisine: American
Description
Savory and tender, this Slow Cooker Maple Mustard Corned Beef features a delightful glaze made from maple syrup and mustard, making it a perfect choice for a hassle-free dinner. It’s easy to prepare and is sure to impress your guests with its rich flavors!
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 the corned beef and pat it dry with a paper towel.
- Heat a large skillet over medium-high, adding cooking oil to the pan.
- Brown the meat on all sides in the hot oil.
- Place the browned corned beef into the slow cooker.
- In a small bowl, mix together maple syrup, mustard, black pepper, and minced garlic.
- Pour the sauce over the corned beef in the slow cooker.
- Cover and cook on LOW for 7 hours without lifting the lid.
- Serve with your choice of sides, like mashed red potatoes or steamed vegetables.
Notes
Removing the spice packet enhances the flavor of the glaze.
Ensure to brown the beef thoroughly for a deeper flavor.
Experiment with your favorite sides to complement the dish.
Nutrition
- Serving Size: 1 serving
- Calories: 450
- Sugar: 25g
- Sodium: 950mg
- Fat: 20g
- Saturated Fat: 7g
- Unsaturated Fat: 8g
- Trans Fat: 0g
- Carbohydrates: 35g
- Fiber: 1g
- Protein: 30g
- Cholesterol: 80mg





