Slow Cooker Corned Beef and Potato Casserole

This slow cooker corned beef and potato casserole is a hearty, creamy dish made with layers of seasoned meat, cheese, potatoes, and a deliciously rich savory sauce.

Also try Italian inspired French onion soup or what about a slow cooker polenta side dish? Irish nachos are a fun take on classic nachos.

Why You’ll Love It

Easy to prep: Just layer the ingredients, pour in the sauce and let the slow cooker do the rest.
Hearty and filling: Packed with protein, potatoes and cheese for a satisfying meal.
Bold flavor: Pickling spices, hot sauce and Worcestershire sauce add depth to every bite.
Minimal cleanup: One slow cooker is all you need for this complete dinner.
Crowd-pleaser: Perfect for family dinners, potlucks or meal prep.

Corned Beef and Potato Casserole Ingredients

A complete list of ingredients and amounts can be found in the recipe card below.

Corned beef: Savory and seasoned with pickling spices, it forms the base of the dish.
Pickling spice: Infuses the meat with classic corned beef flavor.
Russet potatoes: Hearty and starchy, they hold up well during long cooking.
Yellow onion: Adds sweetness and depth to the layers.
Pepper jack cheese: Gives the casserole a melty texture and gentle heat.
Vegetable broth: Thins the sauce and adds savory balance.
Hot sauce: Introduces a spicy kick.
Worcestershire sauce: Adds a rich, umami depth.
Creamy mushroom soup: Binds the layers together with creamy, savory flavor.

How to Make Crockpot Corned Beef and Potato Casserole

For more detailed instructions with weights and measurements, jump to the printable recipe card.

Sear the corned beef: Cube the beef, season with pickling spice and brown it in a hot pan.
Prep the vegetables: Thinly slice the potatoes and onion.
Layer in the slow cooker: Alternate layers of potatoes, onion, corned beef, and shredded cheese.
Mix the sauce: Whisk together broth, hot sauce, Worcestershire, and mushroom soup.
Cook until tender: Pour the sauce over the layers, cover, and cook until everything is tender and well combined.

Substitutions and Variations

Use different cheese: Swap pepper jack for cheddar or mozzarella for a milder flavor.
Add more veggies: Include sliced bell peppers or mushrooms in the layers.
Try a different soup: I like the rich, earthy flavor 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.
Potatoes: 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.

Serving Suggestions

Appetizer: Begin your meal with ground turkey vegetable soup and homemade Irish soda bread.
Side dishes: Pair your corned beef and potato bake with roasted carrots or Brussels sprouts.
Desserts: Finish off with Baileys cream pie or banana chocolate chip cookies.

How to Store Corned Beef and Potato Casserole

Store: Keep leftovers in an airtight container in the refrigerator and eat within 3 days.
Freeze: You can freeze it in an airtight container for up to 3 months.
Thaw: Defrost in the refrigerator overnight.
Reheat: You can warm it back up in a pan on the stove or in the microwave.