Tender Slow Cooker Corned Beef Recipe with Mustard Glaze

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Author: Olivia
Published:
Tender slow cooker corned beef with mustard glaze on a white plate.

why make this recipe

This slow cooker corned beef is simple and hands-off. It cooks low and slow so the meat becomes very tender. The mustard glaze adds a sweet and tangy finish that makes the beef shine. It is great for family dinners and special days when you want a warm, hearty meal without too much work.

introduction

This recipe makes a tender, juicy corned beef with soft vegetables and a sticky mustard glaze. It cooks all day in the slow cooker and finishes under the broiler for a nice crust. If you enjoy slow cooker meals, try these slow cooker chicken dinner recipes for more easy ideas.

how to make Tender Slow Cooker Corned Beef Recipe with Mustard Glaze

Start by laying sliced onion, carrots, and potatoes in the slow cooker. Rinse and pat dry the corned beef, then place it fat side up on the vegetables. Add the brisket spice packet, garlic, bay leaves, and peppercorns. Pour beef broth around the meat and cook low until fork-tender. Make a simple mustard glaze near the end, brush it on, and broil briefly to caramelize. Let the meat rest, slice against the grain, and serve with the vegetables and juices.

Ingredients :

  • 3-4 lbs corned beef brisket (flat cut preferred, with spice packet)
  • 1 large yellow onion, sliced
  • 4 garlic cloves, smashed
  • 3 large carrots, peeled and cut into chunks
  • 1 lb small red potatoes, halved
  • 2 cups beef broth (low-sodium preferred)
  • 2 bay leaves
  • 1 tsp whole black peppercorns (optional)
  • Corned beef spice packet (from brisket)
  • 1/3 cup Dijon mustard
  • 1/3 cup brown sugar, packed
  • 2 tbsp apple cider vinegar
  • Freshly cracked black pepper, to taste

Directions :

  1. Scatter sliced onion, carrots, and potatoes evenly in the bottom of your slow cooker.
  2. Rinse corned beef brisket under cold water and pat dry. Place brisket, fat side up, on top of vegetables.
  3. Sprinkle spice packet, smashed garlic, bay leaves, and peppercorns over brisket. Pour beef broth around the meat.
  4. Cover and cook on low for 8-9 hours (or high for 5-6 hours) until beef is fork-tender.
  5. About 30 minutes before beef is done, whisk together Dijon mustard, brown sugar, apple cider vinegar, and cracked black pepper in a small bowl.
  6. When brisket is done, transfer to a broiler-safe baking sheet. Brush top and sides generously with mustard glaze.
  7. Broil on high for 2-4 minutes, watching closely, until glaze is bubbling and golden.
  8. Tent beef with foil and let rest for 10 minutes before slicing against the grain.
  9. Arrange slices on a platter with vegetables. Drizzle with leftover glaze or cooking juices if desired.

how to serve Tender Slow Cooker Corned Beef Recipe with Mustard Glaze

Slice the brisket thin against the grain. Serve it with the slow-cooked carrots and potatoes. Spoon some of the cooking juices or leftover glaze over the meat. This goes well with mustard, pickles, or a simple green salad.

how to store Tender Slow Cooker Corned Beef Recipe with Mustard Glaze

Cool the meat and vegetables to room temperature within two hours. Store in an airtight container in the fridge for up to 4 days. For longer storage, freeze in a freezer-safe container for up to 3 months. Thaw in the fridge overnight and reheat gently.

tips to make Tender Slow Cooker Corned Beef Recipe with Mustard Glaze

  • Use a flat cut brisket for even slices.
  • Rinse the brine off the brisket to reduce saltiness.
  • Cook low and slow for the best tenderness.
  • Save some cooking liquid to keep slices moist when reheating.
  • Watch the broiler closely—glaze can burn fast.

variation (if any)

  • Add cabbage wedges in the last 1-2 hours of cooking for a classic combo.
  • Swap brown sugar for maple syrup for a different sweet note.
  • Use whole grain mustard instead of Dijon for texture and flavor.

FAQs

Q: Can I skip the broiler step?
A: Yes. You can serve the corned beef without broiling, but the glaze will not caramelize. It will still taste good.

Q: Can I cook this in an Instant Pot?
A: Yes. Cook on high pressure for about 90 minutes, then natural release for 15 minutes. Adjust vegetables to cook time and texture.

Q: How do I slice the corned beef?
A: Let the meat rest, then slice thin against the grain for tender slices.

Q: Is it safe to leave the slow cooker on low all day?
A: Yes. Slow cookers are designed for long, safe cooking. Keep the lid on to keep the heat and moisture.

Q: Can I use frozen corned beef?
A: It’s best to thaw first. Cooking from frozen can increase cook time and may affect texture.

Print
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Tender Slow Cooker Corned Beef with Mustard Glaze

  • Author: arianarecipes
  • Prep Time: 15 minutes
  • Cook Time: 480 minutes
  • Total Time: 495 minutes
  • Yield: 6 servings 1x
  • Category: Main Course
  • Method: Slow Cooking
  • Cuisine: American
  • Diet: None

Description

This slow cooker corned beef is tender, juicy, and features a sweet and tangy mustard glaze for a hearty meal.


Ingredients

Scale
  • 34 lbs corned beef brisket (flat cut preferred, with spice packet)
  • 1 large yellow onion, sliced
  • 4 garlic cloves, smashed
  • 3 large carrots, peeled and cut into chunks
  • 1 lb small red potatoes, halved
  • 2 cups low-sodium beef broth
  • 2 bay leaves
  • 1 tsp whole black peppercorns (optional)
  • Corned beef spice packet (from brisket)
  • 1/3 cup Dijon mustard
  • 1/3 cup brown sugar, packed
  • 2 tbsp apple cider vinegar
  • Freshly cracked black pepper, to taste

Instructions

  1. Scatter sliced onion, carrots, and potatoes evenly in the bottom of your slow cooker.
  2. Rinse corned beef brisket under cold water and pat dry. Place brisket, fat side up, on top of vegetables.
  3. Sprinkle spice packet, smashed garlic, bay leaves, and peppercorns over brisket. Pour beef broth around the meat.
  4. Cover and cook on low for 8-9 hours (or high for 5-6 hours) until beef is fork-tender.
  5. About 30 minutes before beef is done, whisk together Dijon mustard, brown sugar, apple cider vinegar, and cracked black pepper in a small bowl.
  6. When brisket is done, transfer to a broiler-safe baking sheet. Brush top and sides generously with mustard glaze.
  7. Broil on high for 2-4 minutes, watching closely, until glaze is bubbling and golden.
  8. Tent beef with foil and let rest for 10 minutes before slicing against the grain.
  9. Arrange slices on a platter with vegetables. Drizzle with leftover glaze or cooking juices if desired.

Notes

For best results, use a flat cut brisket and rinse the brine to reduce saltiness. Store leftover corned beef in an airtight container for up to 4 days.


Nutrition

  • Serving Size: 1 serving
  • Calories: 400
  • Sugar: 10g
  • Sodium: 1200mg
  • Fat: 24g
  • Saturated Fat: 9g
  • Unsaturated Fat: 12g
  • Trans Fat: 0g
  • Carbohydrates: 28g
  • Fiber: 4g
  • Protein: 35g
  • Cholesterol: 85mg

Ariana’s Delicious Moments
Hi, I’m Ariana!

A self-taught home cook who loves creating everyday recipes that are simple, flavorful, and family-friendly. This blog is where I share the meals I actually make from quick weeknight dinners to sweet weekend treats.Let’s cook together!

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