Breakfast Stovetop leftovers brunch savory sandwich comfort-food

Corned Beef Hash Sandwich

Name: Corned Beef Hash Sandwich
Prep time: 15 min
Cook time: 20 min
Total time: 35 min
Yield: 2 servings
Cuisine: American
Ingredients: 8 oz Cooked corned beef, diced or shredded; 2 cups Yukon Gold or russet potatoes, peeled and diced; 0.5 medium Yellow onion, finely chopped; 2 tbsp Vegetable oil (or neutral oil); 1 tsp Salt and freshly ground black pepper; 2 large Large eggs; 4 slices Slices of sturdy bread (sourdough, rye or country loaf); 2 tbsp Unsalted butter; 2 slices Cheddar cheese slices (or your favorite melting cheese); 2 tsp Dijon mustard

Hearty corned beef hash piled into an open-faced, melty sandwich — a perfect savory brunch that turns leftovers into something special. Crisped potatoes and onions mingle with salty corned beef, topped with cheese and a fried egg for a satisfying breakfast or brunch.

0.0(0 reviews)

Prep: 15m · Cook: 20m · Total35 mins

DifficultyEasy

Serves2

AuthorJake

Jake's note

"This sandwich is a great way to reinvent leftover corned beef into a showstopping brunch. It shines on weekend mornings or for a cozy holiday breakfast when you want something hearty and quick."

Corned Beef Hash Sandwich

There’s something stubbornly satisfying about turning last night’s corned beef into a new morning ritual. This open‑faced corned beef hash sandwich leans on texture — crisp, golden cubes of potato, browned flakes of corned beef and a thin, buttery toast that stands up to the hash’s weight — and on balance, where a smear of Dijon and a bright hit of pickles or hot sauce cuts through the meat’s salt and the yolk’s richness. Using sturdy bread (sourdough, rye or a country loaf) and a melting cheese makes each bite cohesive, so you get crunchy, creamy and beefy all at once.

What makes this version work is a few small technique choices: give the potatoes space to sear, let the corned beef color in the pan instead of stirring immediately, and toast the bread butter‑side down before finishing with cheese so it won’t go soggy. The recipe is forgiving — ideal for brunch hosts who want impressive results without precise timing, and for cooks who love the idea of elevating leftovers into something wholly new and craveable.

Plan your timing

Enter your target meal time:

6:19 pm–6:25 pm→Cook potatoes and sweat onions

6:25 pm–6:31 pm→Add and crisp the corned beef

6:31 pm–6:37 pm→Fry the eggs

6:37 pm–6:43 pm→Toast the bread and melt the cheese

6:43 pm–6:49 pm→Assemble the sandwiches

6:49 pm–6:55 pm→Serve and optional finishes

Ingredients

Yield

Instructions

Cook potatoes and sweat onions

Heat a large skillet over medium heat and add the vegetable oil. Add the diced potatoes in a single layer and cook, stirring occasionally, until they start to brown and become tender, about 10–12 minutes. Add the chopped onion, season with salt and pepper, and continue cooking until the onions are translucent and the potatoes are golden, another 3–4 minutes.

For this step

2 cupsYukon Gold or russet potatoes, peeled and diced
0.5 mediumYellow onion, finely chopped
2 tbspVegetable oil (or neutral oil)
1 tspSalt and freshly ground black pepper

Add and crisp the corned beef

Push the potatoes and onions to the pan edge and add the diced corned beef to the center; spread it out and let it sit for a minute to develop color. Stir everything together and press the hash into the pan, allowing edges to crisp; continue cooking 4–6 minutes more until the corned beef is heated through and some pieces are nicely browned. Taste and adjust seasoning.

For this step

8 ozCooked corned beef, diced or shredded

Fry the eggs

In a separate nonstick skillet, melt a little butter or oil over medium heat and crack in the eggs. Cook them sunny-side up, or to your preferred doneness, until whites are set and yolks are still runny (about 3–4 minutes). Season lightly with salt and pepper and keep warm.

For this step

2 largeLarge eggs

Toast the bread and melt the cheese

Spread butter on one side of each bread slice. In a clean skillet over medium heat, toast the bread butter-side down until golden. Flip, place a slice of cheddar on two slices, and cover the pan briefly so the cheese melts, about 1–2 minutes.

For this step

4 slicesSlices of sturdy bread (sourdough, rye or country loaf)
2 tbspUnsalted butter
2 slicesCheddar cheese slices (or your favorite melting cheese)

Assemble the sandwiches

Spread Dijon mustard on the plain toasted slices, divide the corned beef hash between the two cheesy slices, and top each with a fried egg. Close the sandwiches and press gently so everything stays together; cut in half if desired.

For this step

2 tspDijon mustard

Serve and optional finishes

Serve immediately while hot and melty. Optional finishes: add pickles or hot sauce, a sprinkle of chopped chives, or swap the cheddar for Swiss for a different flavor — great for brunch or using up leftover corned beef.

Tips from the kitchen

Dry the Potato Dice

Pat the diced potatoes completely dry before they hit the pan; removing surface moisture helps them brown instead of steam.

Cook in a Single Layer

Spread potatoes in an even, single layer and resist frequent stirring so a crisp crust forms on the pieces.

Let Beef Develop Color

When you add the corned beef, press it into the pan and leave it undisturbed for 45–60 seconds so small browned edges develop for extra flavor.

Melt Cheese Covered

After flipping the toasted bread, add the cheese and cover the pan for 1–2 minutes to trap steam and melt the cheese without charring the bread.

Set Eggs Without Flipping

For sunny‑side eggs with set whites and runny yolks, spoon hot fat around the whites or cover the skillet briefly to finish cooking them gently.

Variations & substitutions

Vegetarian 'Corned' Version

Swap the corned beef for smoked, diced king oyster mushrooms or well‑seared tempeh and add a teaspoon of liquid smoke and a pinch of salt to mimic that savory profile.

Swiss & Rye Twist

Replace cheddar with Swiss or Gruyère and use rye bread for a tangier, slightly more European flavor that pairs beautifully with mustard and pickles.

Spicy Breakfast Melt

Fold chopped pickled jalapeños into the hash, spread a thin layer of Sriracha mayo on the bread, and use pepper jack for melting cheese with a kick.

Cabbage‑Forward Hash

Add shredded cooked cabbage (or leftover braised cabbage) to the pan with the onions for extra volume and a sweet‑savory contrast to the corned beef.

Storage & make-ahead

Leftover hash keeps well refrigerated in an airtight container for up to 3–4 days; store fried eggs and toasted bread separately to avoid sogginess. To reheat, warm the hash in a skillet over medium heat to re‑crisp the edges, then top with a freshly fried egg and melted cheese; you can also reheat in a 350°F oven for 10–12 minutes. Freeze plain hash (no egg or bread) in a freezer‑safe container for up to 2 months and thaw overnight before reheating.

What to serve with it

Serve with a small bright salad of arugula, lemon and shaved fennel or quick pickled cucumbers to cut the richness. For drinks, a Bloody Mary or a sharp espresso complements the savory notes, while a light lager or dry cider is good for a weekend brunch crowd; garnish the plate with chopped chives or scallions for color.

Frequently asked questions

Can I use raw corned beef in this recipe?

No — this recipe assumes cooked corned beef (leftovers or deli slices). If you have raw corned beef brisket, it must be fully cooked and shredded first before being added to the hash.

My potatoes are sticking to the pan — how do I prevent that?

Use a roomy skillet and enough neutral oil so the potatoes glide; let them sit undisturbed long enough to form a crust before turning. A well‑seasoned cast iron or nonstick pan also helps prevent sticking.

How do I reduce the saltiness of store‑bought corned beef?

Rinse thin slices briefly under cold water and pat dry, or soak the diced beef in cold water for 10–15 minutes, then drain. Bright elements like Dijon, lemon, or pickles will also help balance saltiness on the plate.

Can I assemble these ahead for a brunch crowd?

Yes — cook the hash and toast the bread ahead, keep them warm separately, and fry the eggs just before serving; assemble on demand so the toast stays crisp and yolks remain runny. Alternatively, reheat the hash in a low oven and melt the cheese at service time.

What’s the best way to reheat without losing crispness?

Reheat the hash in a skillet over medium heat to restore crisp edges rather than microwaving, and toast the bread again briefly before assembling to maintain texture.

About the author

Jake

Hello, I'm Jake. I started this recipe site with the idea that I hated recipe websites that overwhelm you with long stories and ads just to see plain content that's not helpful. My goal is to provide you with quality recipes, simple ideas and a fun cooking experience. There's lots of fun things to cook, and I think as you browse the site you'll find that TopShelf.Recipes is the place for quality recipes on the web.

See all recipes by Jake →

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Ingredients

2 servings

Step 1: Cook potatoes and sweat onions

Yukon Gold or russet potatoes, peeled and diced2 cups
Yellow onion, finely chopped0.5 medium
Vegetable oil (or neutral oil)2 tbsp
Salt and freshly ground black pepper1 tsp

Step 2: Add and crisp the corned beef

Cooked corned beef, diced or shredded8 oz

Step 3: Fry the eggs

Large eggs2 large

Step 4: Toast the bread and melt the cheese

Slices of sturdy bread (sourdough, rye or country loaf)4 slices
Unsalted butter2 tbsp
Cheddar cheese slices (or your favorite melting cheese)2 slices

Step 5: Assemble the sandwiches

Dijon mustard2 tsp

Nutrition Facts

Per serving: 1 sandwich (470g)

Calories950

Total Fat52.4g

Saturated Fat15.8g

Trans Fat0.4g

Polyunsaturated Fat8.2g

Monounsaturated Fat22.5g

Total Carbohydrates76.2g

Dietary Fiber8.3g

Total Sugars3.9g

Protein43.2g

Nutrition values are estimated from USDA ingredient data and may vary based on preparation, brands, and portion sizes. Values are provided for informational purposes only.

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