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Crispy Corned Beef Egg Rolls: The Ultimate St. Patrick’s Day Leftover Recipe

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Okay, friends, if you’re like me, you probably end up with a mountain of delicious corned beef and cabbage after St. Patrick’s Day. It’s too good to waste, right? Well, I have found THE best way to repurpose those tasty leftovers into something entirely new and exciting: crispy, savory corned beef egg rolls! Seriously, these little pockets of flavor are so good, you might just want to cook extra corned beef next year just for this.

I’ve been playing around with this recipe for a while, tweaking the filling and the dipping sauce to get it just right. The result is a perfect balance of salty corned beef, tender cabbage, and a zesty, tangy mustard sauce that really makes everything pop. They’re surprisingly easy to make, and they disappear FAST. Get ready to impress your family and friends with a creative leftover dish that tastes anything but reheated!

Whip Up That Zesty Mustard Sauce

Let’s talk about this sauce first, because it’s a star in its own right and really makes these corned beef egg rolls shine. It’s got a classic Dijon tang, softened by a bit of yellow mustard, and a tiny kick from cayenne. Plus, the rice vinegar brightens everything up! It comes together in about two minutes flat – seriously, just grab a small bowl and whisk all those ingredients until it’s perfectly smooth. I love making this ahead of time, even a day or two before. That way, when it’s time to fry the egg rolls, the sauce is already chilled and ready to go. The flavors actually deepen a little with time, too. Don’t be shy about giving it a taste after you mix it. Want more spice? Add a pinch more cayenne. Prefer it a little milder? A tiny bit more yellow mustard can balance it out. It’s truly a simple, versatile condiment that will become a go-to for so many other dishes once you try it!

You want that consistency to be nice and fluid but not watery, perfect for dipping. I always keep a jar of Dijon and yellow mustard on hand, and mustard powder is a secret weapon for depth of flavor. If you don’t have rice vinegar, apple cider vinegar can work in a pinch, but the rice vinegar has a milder, slightly sweeter note that I prefer here. This step is a breeze and honestly, it sets the whole stage for the deliciousness that’s coming. Don’t skip chilling it – a cool sauce against a hot, crispy egg roll is just *chef’s kiss* perfect.

Crafting the Perfect Corned Beef Egg Roll Filling

Now for the heart of our egg rolls: the filling! This is where your St. Patrick’s Day leftovers truly get a glow-up. The key here is getting the texture right. We’re using a food processor, which makes quick work of chopping up your cooked cabbage, corned beef, and carrots. You want to pulse it, not just let it run. Think of it like a quick dance in the processor – a few short bursts until the pieces are roughly pea-sized. We’re aiming for a finely chopped mix that holds together, but still has some texture. If you over-process it, you’ll end up with a paste, and we definitely don’t want that! A good pulse will give you little bits of corned beef and tender cabbage that marry beautifully once fried.

Seasoning is also super important here. Don’t forget to add a generous pinch of kosher salt and freshly ground black pepper to the mixture before you pulse it. This helps to distribute the seasoning evenly throughout the filling. The corned beef itself is salty, so taste a tiny bit of the mixture after pulsing and adjust if needed. Remember, bland filling makes for a bland egg roll, and we’re not about that life! If you don’t have a food processor, you can absolutely chop everything by hand, just aim for those small, even pieces. Take your time with this step; a well-prepared filling is the secret to a seriously satisfying egg roll.

The Art of Assembling and Frying

Wrapping these egg rolls might seem a little daunting at first, but I promise it’s simpler than it looks after you do one or two. Think of it like wrapping a tiny gift! Lay your wonton wrapper like a diamond, with a corner pointing towards you. Place your filling in a neat log shape in the center. Now, for the magic: a little water on the edges is your glue. Fold that bottom corner up and over, tuck it in tight. Then bring in the sides, making sure they’re snug against the filling. Finally, roll it away from you, keeping it tight and compact. The goal is to seal those edges completely so the filling stays put and the oil doesn’t seep in. A well-sealed egg roll will fry up perfectly crisp and golden.

Frying these beauties is the grand finale! Temperature is critical here. You need your oil to be at a steady 350°F. If it’s too cold, your egg rolls will get greasy and soggy. Too hot, and they’ll brown too quickly on the outside before the inside gets perfectly heated. A deep-fry thermometer is your best friend for this. Don’t overcrowd the pot – work in batches so the oil temperature doesn’t drop too much. You want them to turn a lovely golden brown, crisp on the outside, in about 3-4 minutes. Once they hit that perfect color, pull them out and let them drain on a wire rack. That rack is key for air circulation, keeping them from getting soggy on the bottom. Serve them while they’re hot and crunchy with that amazing mustard sauce!

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Why This Recipe Works

This recipe works so well because it takes familiar, comforting flavors from leftover corned beef and cabbage and transforms them into an exciting, hand-held snack. The precise chopping of the filling ensures a good texture, while the crispy wonton wrapper provides a delightful contrast. The tangy mustard dipping sauce cuts through the richness of the beef, making each bite balanced and incredibly satisfying.

Who knew St. Patrick's Day leftovers could be this exciting? Seriously, these egg rolls are a total win!— Charlotte
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Prep 25 minutesCook 15 minutesYield 6 egg rolls
Ingredients
  • ¼ cup Dijon mustard
  • 2 tablespoons yellow mustard
  • 1 tablespoon plus 1 teaspoon unseasoned rice vinegar
  • 1 tablespoon plus 1 teaspoon mustard powder
  • ¼ teaspoon cayenne pepper
  • 2 cups coarsely chopped cooked cabbage (about 7 ounces)
  • 1 cup (packed) coarsely chopped cooked corned beef (about 5 ounces)
  • ½ cup coarsely chopped cooked carrots (about 3 ounces)
  • To taste Kosher salt
  • To taste freshly ground black pepper
  • 6 wonton wrappers
  • About 4 cups neutral oil (like canola or vegetable oil), for frying
Instructions
  1. Make the Mustard Sauce In a small bowl, whisk together the Dijon mustard, yellow mustard, rice vinegar, mustard powder, and cayenne pepper until completely smooth. Give it a taste and adjust if you like more kick! Cover the bowl and chill the sauce in the refrigerator until you’re ready to serve. You can actually make this sauce up to two days ahead of time, which is super helpful.
  2. Prepare the Filling Place the chopped cooked cabbage, corned beef, and carrots into a food processor. Season generously with kosher salt and freshly ground black pepper. Pulse the mixture until the pieces are slightly smaller than the size of a pea. You want a finely chopped, almost crumbly consistency, but not a total mush. This ensures a great texture in every bite!
  3. Assemble the Egg Rolls Lay one wonton wrapper on a clean work surface so a corner is pointing towards you (like a diamond). Scoop about ⅓ cup of the prepared filling into the center of the wrapper. Shape the filling into a horizontal log, about 4 inches long. Dip your fingers in a little water and lightly moisten the top, left, and right corners of the wrapper. Fold the bottom corner up and over the filling, tucking it snugly underneath. Next, fold the left and right corners tightly over the filling to completely enclose it. Continue to roll the bundle away from you, tucking as you go, to form a neat egg roll shape. Make sure the sides are as sealed as possible. If you see any gaps, use a tiny bit of water to pinch and patch them up. Repeat with the remaining wrappers and filling.
  4. Fry the Egg Rolls Pour about 4 cups of neutral oil into a medium pot, making sure it comes halfway up the sides. Attach a deep-fry thermometer to the side of the pot. Heat the oil over high heat until the thermometer reads 350°F. Once it reaches temperature, reduce the heat to medium to maintain a steady temperature. Carefully add a few egg rolls to the hot oil, making sure not to overcrowd the pot. Fry them for about 3-4 minutes, turning occasionally, until they are beautifully golden brown and crisp. Use tongs to transfer the fried egg rolls to a wire rack set over a paper towel-lined plate to drain any excess oil. Let them cool slightly before serving. The perfect egg roll will be super crispy on the outside but still have a satisfying chew. Serve immediately with the chilled mustard sauce on the side!
Tested Tip

For extra crispiness and to ensure even cooking, don't overcrowd your pot when frying. Fry in small batches, giving each egg roll plenty of space to get golden brown.

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Whip Up That Zesty Mustard Sauce

Crafting the Perfect Corned Beef Egg Roll Filling

The Art of Assembling and Frying

Make It Yours

  • Spicier Kick — If you love a little extra heat, double the cayenne pepper in the mustard sauce. You can also add a pinch of red pepper flakes to the filling mixture for a subtle warmth that complements the corned beef.
  • Add Some Cheese — For a cheesy twist, mix about ¼ cup of shredded sharp cheddar cheese into the corned beef and cabbage filling before rolling. It adds a delicious creaminess and extra flavor dimension.
  • Air Fryer Option — If you prefer not to deep-fry, you can air fry these! Lightly brush the assembled egg rolls with a little oil. Air fry at 375°F for 8-12 minutes, flipping halfway through, until golden brown and crispy. Cooking times may vary, so keep an eye on them!
  • Veggie Boost — Feel free to add other finely chopped cooked vegetables to the filling. Diced cooked potatoes, bell peppers, or even a little spinach would be delicious additions to bulk up the veggie content.
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FAQ

Can I use egg roll wrappers instead of wonton wrappers?

Yes, you absolutely can! If you use standard egg roll wrappers, you'll likely get fewer but larger egg rolls. You might need to adjust the amount of filling per wrapper. The cooking time might also increase slightly to ensure they cook through evenly.

What kind of oil is best for frying?

Neutral oils with a high smoke point are best for deep frying. Canola oil, vegetable oil, peanut oil, or grapeseed oil are all great choices. They won't impart any unwanted flavors to your egg rolls and can handle the heat.

How do I store leftover egg rolls?

Cooked egg rolls are best enjoyed fresh, but you can store leftovers in an airtight container in the refrigerator for up to 2-3 days. To reheat, I recommend popping them back in an air fryer or oven at 350°F until crispy again – about 5-8 minutes. Microwaving them will make them soft.

Can I freeze these egg rolls?

Yes, you can! You can freeze the assembled, uncooked egg rolls. Place them on a parchment-lined baking sheet and freeze until solid, then transfer them to a freezer-safe bag or container for up to 1 month. When ready to cook, fry them straight from frozen, adding a couple of minutes to the cooking time, or air fry as directed, adding a few extra minutes.

My egg rolls aren't getting crispy, what went wrong?

This usually happens for one of two reasons: either your oil wasn't hot enough (below 350°F) or you overcrowded the pot. Too many egg rolls at once drops the oil temperature quickly, leading to soggy results. Make sure to use a thermometer and fry in batches for optimal crispiness!

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What To Serve With This

  • Extra Mustard Dipping Sauce
  • Sweet Chili Sauce
  • A Simple Green Salad with Vinaigrette
  • Creamy Coleslaw
  • Pickled Cucumbers
  • A Cold Beer or Sparkling Hard Cider

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