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Slow cooker corned beef hash au gratin makes an unusual St. Patrick’s Day treat if you’re looking for something a little bit different! It’s a tasty, comforting dish made with corned beef, potatoes and pepper jack cheese. Since it’s a slow cooker corned beef casserole you can simply add the ingredients to a crockpot then forget about it until dinner time!

Food blogger, Bella Bucchiotti of xoxoBella, shares a recipe for slow cooker corned beef hash au gratin. This casserole is made with corned beef, potatoes and pepper jack cheese.

A cabbage side dish and pint of Guinness or shamrock shake are optional but possible additions to this crockpot cheesy corned beef and potatoes. Make this and enjoy all the elements of St. Patrick’s Day but with a brand new spin on the classic corned beef dish!

If you enjoy this recipe, you might also like to try Italian inspired French onion soup or what about this slow cooker polenta side dish? Air fryer ham and cheese double-crust quiche is also hearty and satisfying!

Food blogger, Bella Bucchiotti of xoxoBella, shares a recipe for slow cooker corned beef hash au gratin. This casserole is made with corned beef, potatoes and pepper jack cheese.

Slow Cooker Corned Beef Hash Ingredients

This is a 9-ingredient slow cooker recipe and a lot of those ingredients are pantry staples and found at your local grocery store. Along with the fresh corned beef and russet potatoes, you will need pickling spice, onion, cheese, broth, hot sauce, Worcestershire sauce, and mushroom soup.

Food blogger, Bella Bucchiotti of xoxoBella, shares a recipe for slow cooker corned beef hash au gratin. This casserole is made with corned beef, potatoes and pepper jack cheese.

You might be curious about the pickling spice in this corned beef hash recipe. Although this ingredient is good for pickling vegetables and making fermented foods, it is more versatile than that. The combination of broken and whole seeds, spices and herbs really bring out the taste of crockpot cheesy corned beef and potatoes. There is no better way to cook corned beef hash than in the slow cooker.

Food blogger, Bella Bucchiotti of xoxoBella, shares a recipe for slow cooker corned beef hash au gratin. This casserole is made with corned beef, potatoes and pepper jack cheese.

There are different brands to choose from. If you don’t have any, you can sub a small pinch each of any of the following you happen to have: mustard seed, coriander seeds, allspice, red pepper, cinnamon, cloves, ginger, and a bay leaf.

Food blogger, Bella Bucchiotti of xoxoBella, shares a recipe for slow cooker corned beef hash au gratin. This casserole is made with corned beef, potatoes and pepper jack cheese.

If your spice rack doesn’t extend to all that, you can use garlic and some chunks of onion and celery instead, or even some allspice, black pepper and a couple of bay leaves. Another idea would be using the spice packet that comes with packaged corned beef sometimes.

Food blogger, Bella Bucchiotti of xoxoBella, shares a recipe for slow cooker corned beef hash au gratin. This casserole is made with corned beef, potatoes and pepper jack cheese.

The potatoes and onion help to make the dish more filling. Vegetable variation options would be turnips, parsnips, sweet potatoes, pumpkins or even squash. The pepper jack adds a lot of flavour as well as a nice, chewy texture since it’s layered between the other ingredients. Feel free to switch it for a nice vintage Irish cheddar or another kind of cheese. No matter how you make it, you will agree that it is the ultimate comfort food.

Food blogger, Bella Bucchiotti of xoxoBella, shares a recipe for slow cooker corned beef hash au gratin. This casserole is made with corned beef, potatoes and pepper jack cheese.

Even more rich flavour is added with the hot sauce and Worcestershire sauce although you can omit either one. And then you have the combination of cream of mushroom soup and veggie broth. The only other thing you will need are some fresh herbs for garnish and those are optional too!

Food blogger, Bella Bucchiotti of xoxoBella, shares a recipe for slow cooker corned beef hash au gratin. This casserole is made with corned beef, potatoes and pepper jack cheese.

How to Make Cornbeef Hash Slow Cooker Casserole

Season the corned beef with pickling spices then sear in a hot pan for several minutes. Now alternate layers of thinly sliced potatoes, thinly sliced onions, corned beef, and cheese to the crockpot. Mix the other ingredients together and pour it into the crockpot.

Food blogger, Bella Bucchiotti of xoxoBella, shares a recipe for slow cooker corned beef hash au gratin. You will love this crockpot cheesy corned beef and potatoes with is a great dinner for St. Patrick's Day.

Cover and cook for 4 hours on high or 7 hours on low then enjoy warm with fresh herbs as a garnish if liked. Fresh parsley works well as a garnish. You’re going to love how this slow cooked corn beef meal tastes!

Food blogger, Bella Bucchiotti of xoxoBella, shares a recipe for slow cooker corned beef hash au gratin. You will love this crockpot cheesy corned beef and potatoes with is a great dinner for St. Patrick's Day.

What to Serve with Slow Cooker Corned Beef Hash au Gratin

This St. Patrick’s Day treat is tasty just as it is, although adding a cabbage side dish, baked carrots, mashed potatoes or something similar would work too. I like to have crusty bread (maybe this Irish soda bread recipe from Ireland) with this to soak up every last drop of the wonderful juices.

Food blogger, Bella Bucchiotti of xoxoBella, shares a recipe for slow cooker corned beef hash au gratin. You will love this crockpot cheesy corned beef and potatoes with is a great dinner for St. Patrick's Day.
Food blogger, Bella Bucchiotti of xoxoBella, shares a recipe for slow cooker corned beef hash au gratin. You will love this crockpot cheesy corned beef and potatoes with is a great dinner for St. Patrick's Day.

How to Store and Reheat this Corned Beef Casserole

Keep any slow cooker corned beef casserole leftovers in a covered airtight container in the refrigerator for several days. If you’d prefer to freeze them, that would also work and they’ll be fine frozen for a couple of months. I’d recommend freezing the slow cooker corned beef hash au gratin in individual portions so you can simply warm back up the amount you need.

Food blogger, Bella Bucchiotti of xoxoBella, shares a recipe for slow cooker corned beef hash au gratin. You will love this crockpot cheesy corned beef and potatoes with is a great dinner for St. Patrick's Day.

The simplest way to reheat either chilled or thawed leftover crockpot cheesy corned beef and potatoes is in the microwave or else in a hot oven. You could also warm it back up in a pan but then you’d lose the layers.

Food blogger, Bella Bucchiotti of xoxoBella, shares a recipe for slow cooker corned beef hash au gratin. You will love this crockpot cheesy corned beef and potatoes with is a great dinner for St. Patrick's Day.

FAQs about Slow Cooker Corned Beef Hash au Gratin

Can I use a different kind of soup?

I like the rich, earthy flavour mushroom soup adds to this corned beef, potatoes and pepper jack cheese recipe. However it would be fine using another type of cream soup. Cheese soup, onion soup or even celery soup should all work fine, as long as they’re creamy.

Can I use another type of potato?

Russet potatoes are especially good in this slow cooker corned beef hash au gratin because they hold their shape. Because of the long, slow cooking time of crockpot recipes you will need a firm, waxy type of potato, not a starchy kind that disintegrates. Other options include red or white potatoes.

What is potato au gratin?

Au gratin potatoes can be confused with scalloped potatoes because they look similar. Scalloped potatoes are made with a mix of milk and heavy cream, while potato au gratin uses shredded cheese between the potato layers.

Do you need to peel potatoes?

You can leave the skin on the potatoes if you like or peel them. Both ways will taste delicious.

Food blogger, Bella Bucchiotti of xoxoBella, shares a recipe for slow cooker corned beef hash au gratin. You will love this crockpot cheesy corned beef and potatoes with is a great dinner for St. Patrick's Day.
Food blogger, Bella Bucchiotti of xoxoBella, shares a recipe for slow cooker corned beef hash au gratin. You will love this crockpot cheesy corned beef and potatoes with is a great dinner for St. Patrick's Day.

Slow Cooker Corned Beef Hash Au Gratin Recipe

5 from 9 votes

Slow Cooker Corned Beef Hash Au Gratin

By: Bella Bucchiotti
Slow cooker corned beef hash au gratin makes an unusual St. Patrick's Day treat! It's a dish made with corned beef, potatoes and pepper jack cheese. Since it's a slow cooker corned beef casserole you can add the ingredients to a crockpot then forget about it!
Prep Time: 15 minutes
Cook Time: 7 hours
Total Time: 7 hours 15 minutes
Servings: 9

Equipment

Ingredients 

  • 2 Pounds corned beef, cubed
  • 2 Tablespoons pickling spice
  • 2 Pounds russet potatoes, peeled and sliced thin
  • 1 onion, yellow, sliced 
  • 6 Ounces pepper jack cheese, shredded  
  • 2/3 Cup vegetable broth
  • 1 Tablespoon hot sauce
  • 1 Tablespoon worcestershire
  • 1 Can mushroom soup , creamy

Instructions 

  • Heat a frying pan over high heat. 
  • Cut corned beef into cubes. Season with pickling spices. Add to the hot pan and sear for 4 minutes.
  • Peel and thinly slice the potatoes. Cut onion into thin slices. 
  • Alternate adding layers of potatoes, onions, corned beef, and cheese to the slow cooker.  
  • In a medium mixing bowl, combine vegetable broth, hot sauce, worcestershire, soup, and a pinch of salt and pepper. Whisk until smooth. Pour into the slow cooker. 
  • Cover and cook on low for 7 hours, or high for 4 hours.  

Nutrition

Calories: 381kcal | Carbohydrates: 23g | Protein: 23g | Fat: 22g | Saturated Fat: 9g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 9g | Cholesterol: 73mg | Sodium: 1701mg | Potassium: 827mg | Fiber: 2g | Sugar: 2g | Vitamin A: 195IU | Vitamin C: 36mg | Calcium: 176mg | Iron: 3mg
Like this recipe? Rate and comment below!

This crockpot cheesy corned beef and potatoes is so easy to make. It’s warm, comforting and utterly delicious, making it ideal for St Patrick’s Day. This is also a great recipe to try if you have leftover corned beef.

Canned corn beef would also work to make this hash recipe, but I prefer to prepare this corned beef from scratch. It is the BEST corned beef recipe that the whole family will love.

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Bella Bucchiotti

Bella Bucchiotti is a Canadian-based syndicated food, travel, and lifestyle writer, photographer, and creator at xoxoBella. She founded xoxoBella in 2015, where she shares her love for food, dogs, sustainability, fitness, crafts, outdoor adventures, travel, and philanthropy to encourage others to run the extra mile, try new recipes, visit unfamiliar places, and stand for a cause. Bella creates stress-free and family-friendly recipes for weeknight dinners and festive feasts.

 

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6 Comments

    1. Hi John, glad you loved it! I made this for breakfast a couple days ago… and now I want it again 🙂