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Slow Cooker Maple Mustard Corned Beef Recipe

Sweet, Savory, and Perfectly Tender Corned Beef Made Easy

Craving a flavorful twist on a traditional favorite? This Slow Cooker Maple Mustard Corned Beef combines sweet maple syrup, tangy mustard, and savory garlic to create a mouthwatering, fork-tender roast. It’s the perfect slow cooker meal for St. Patrick’s Day, family dinners, or easy weekday meal prep.

Ingredients (Serves 6–8)

3 pounds flat-cut corned beef roast (discard the included spice packet)
2 teaspoons cooking oil (vegetable or canola)
½ cup pure maple syrup
¼ cup yellow mustard
1 clove garlic, minced
¼ teaspoon black pepper

Step-by-Step Instructions

Step 1: Prepare the Corned Beef

Remove the corned beef from its packaging.
Discard the spice packet that often comes with it.
Rinse the meat under cold water and pat dry thoroughly with paper towels.
Why skip the spice packet? This recipe uses a homemade maple-mustard glaze instead for a completely different flavor profile.

Step 2: Sear the Meat

Heat 2 teaspoons of oil in a large skillet over medium-high heat.
Once hot, add the corned beef.
Sear each side for 2–3 minutes, until browned.
This locks in flavor and gives the meat a richer texture.

Step 3: Transfer to the Slow Cooker

Carefully transfer the seared corned beef to the bottom of your slow cooker.

Step 4: Make the Maple Mustard Glaze

In a small bowl, mix together:

½ cup maple syrup
¼ cup yellow mustard
1 clove garlic, minced
¼ teaspoon black pepper

Stir until smooth and well blended.

Step 5: Pour the Sauce Over the Meat

Pour the prepared maple mustard mixture evenly over the corned beef in the slow cooker.
Make sure the top of the meat is fully coated for maximum flavor.

Step 6: Slow Cook to Tender Perfection

Cover the slow cooker with the lid.
Cook on LOW for 7 hours or until the corned beef is fork-tender and juicy.
Optional: Baste the meat with juices halfway through cooking for deeper flavor.

Step 7: Slice and Serve

Once cooked, transfer the corned beef to a cutting board.
Let it rest for a few minutes, then slice thinly across the grain.
Spoon some of the leftover maple-mustard glaze from the slow cooker over the top before serving.
Perfect served with roasted potatoes, sautéed cabbage, or over rye bread for amazing sandwiches.

Variations & Serving Tips

Brown Sugar Boost: Add 1 tablespoon of brown sugar to the glaze for a richer caramelized flavor.
Add Veggies: Toss in carrots, potatoes, or cabbage during the last 2 hours of cooking for a complete one-pot meal.
Spicy Kick: Use spicy brown mustard instead of yellow mustard for more heat.
Leftovers Idea: Use leftover corned beef in sliders, wraps, or hash the next day.

Storage & Reheating

Refrigerate: Store leftovers in an airtight container for up to 4 days.
Freeze: Wrap sliced corned beef tightly and freeze for up to 2 months.
Reheat: Gently warm slices in a skillet with a splash of broth or microwave with a damp paper towel to retain moisture.

Why You’ll Love This Maple Mustard Corned Beef

Minimal prep with big flavor payoff
Perfect balance of sweet and savory
Great for holidays or everyday meals
Slow cooker does all the hard work
Excellent leftovers for sandwiches or salads

Final Thoughts

This Slow Cooker Maple Mustard Corned Beef is a delicious departure from the traditional brined version. The sweetness of maple syrup combined with tangy mustard and garlic delivers bold flavor with minimal effort. Whether it’s for a special occasion or a weekday dinner, this easy crockpot recipe is sure to impress!

Recipe: Slow Cooker Maple Mustard Corned Beef