Bulgogi Pajeon Sandwich

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Two of my favorite Korean things, bulgogi and pajeon, have been living separate lives on my plate for way too long, so I finally smashed them together. This bulgogi pajeon sandwich tucks sweet-savory marinated beef and a big stretch of melty mozzarella between two crispy Korean veggie pancakes, and the whole thing eats like the ultimate Korean comfort food mashup. The pajeon gets SO crispy around the edges, the cheese glues it all together, and you get this savory-sweet, cheesy, crunchy bite that’s honestly next level. If you love a good Korean-American mashup, this bulgogi pajeon sandwich is about to wreck you (in the best way)! 🤯

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What Makes This Bulgogi Pajeon Sandwich So Good

It all rides on contrast, and man, you feel every layer. You get tender, thin-sliced beef that drank up all that sweet-savory bulgogi marinade, then a whole veggie-packed pancake that’s crisp at the edges and soft in the middle, and then that gooey mozzarella melting into the seam and holding everything together. Salty, sweet, cheesy, crispy, and beefy all at once! It’s a lot of textures fighting for space in one bite, and trust me, they all win. You won’t know which part to be excited about first.

Plus, making TWO pancakes and sandwiching the beef between them is the move that takes this from “nice Korean pancake” to full-on meal. That bulgogi-and-cheese combo is one I keep coming back to in different forms, like my crispy bulgogi rice paper rolls, which wrap that same marinated beef and melty mozzarella in a super crisp shell. Here it just gets a savory pancake as the bun instead, and I’m not mad about it.

What Is Pajeon?

Pajeon is a classic Korean savory pancake, traditionally made with a simple flour batter loaded with green onions (pa means scallion) and often seafood, pan-fried in a good amount of oil until the edges go lacy and crisp. Unlike a fluffy breakfast pancake, it’s thin, savory, and all about that crispy fried texture you get from frying it in plenty of oil. For this sandwich I bulk mine up with leek, zucchini, jalapeno, onion, sweet potato, and mushroom, so what you’re really eating is a loaded vegetable pajeon doing double duty as bread. If you want to see the traditional version, Maangchi’s pajeon is the classic reference I’d start with. And heads up, this is a different animal from the flaky, laminated frozen dough in my mini scallion pancake croissants, which are rolled and air-fried. Pajeon is a from-scratch batter you fry flat in a pan.

Tips for Making Bulgogi Pajeon Sandwiches

The pancakes are where this lives or dies, so most of these are about getting them crispy. None of it’s hard, I promise, and once you nail the first pancake you’re set!

1. Marinate the beef for at least 30 minutes

Toss the sliced beef, onion, and bulgogi sauce in a freezer bag and let it sit in the fridge for a minimum of 30 minutes. The thin beef drinks up the marinade fast, so even a short soak packs in a ton of flavor, and longer is even better if you’ve got the time.

2. Use a generous amount of oil

Pajeon is basically shallow-fried, so don’t be shy with the oil. That’s what gives you the SO crispy, golden edges instead of a sad, pale pancake. Heat it up properly before the batter goes in, and add a little more between pancakes if the pan’s looking dry. You want that sizzle the second the batter hits.

3. Spread it thin and even

Give the veggie mixture one more stir, then spread it into a thin, even layer in the pan. A thick pancake stays gummy in the middle and won’t crisp, but a thin one cooks through and gets crunchy edge to edge. Swirl the pan occasionally so it doesn’t stick.

4. Melt the cheese right in the pan

Once the pancake’s flipped and golden on both sides, lay the mozzarella on top and cover the pan for a minute so it melts fully. Melty cheese is the glue here, so you want it properly gooey before you build the sandwich, not still sitting there in cold slices.

5. Drain the beef before you build

When the bulgogi finishes cooking there’s usually a little pool of liquid in the pan. Leave most of that behind so your sandwich stays saucy but not soggy. A wet filling steams the pancake from the inside and kills all that crisp you worked for, and that’s the one thing I’d really watch for.

Storage & Leftovers

You’ll want this hot off the pan, when the pajeon is at peak crunch and the cheese is stretchy. If you’ve got leftovers, store the cooked beef and the pancakes separately in airtight containers in the fridge for up to 3 days so the bread doesn’t go soggy sitting in the beef juices. To bring it back, re-crisp the pancakes in a dry pan or the air fryer (not the microwave, which just makes them limp), warm the beef, add fresh cheese, and rebuild it. The bulgogi’s also legit over rice if you run out of pancakes.

Equipment

• Small nonstick pan
• Large frying pan
• Mixing bowls
• Kitchen tongs
• Spatula

Ingredients

Makes 2 servings.

• 4 green onions, cut into 1 inch pieces
• 1/3 cup leek, thinly sliced into 1 inch strips
• 1/2 cup zucchini, thinly sliced into strips
• 1 jalapeno, sliced
• 1/3 cup onion, sliced
• 1/3 cup sweet potato, cut into thin strips
• 1 baby portobello, sliced
• 3/4 cup Assi Pancake Mix
• 3/4 cup water
• 1 lb thinly sliced beef
• 1/2 yellow onion, sliced
• 14 oz Assi Bulgogi Sauce
• 2 slices mozzarella cheese
• vegetable oil, for frying

Substitutions and Swaps

This one’s flexible, but a couple of pieces are load-bearing. Here’s the rundown:

• The beef. Any thinly sliced beef works, and the thinner the better since it cooks in minutes and soaks up the marinade fast. Shabu-shabu or hot pot beef from an Asian market is ideal. Ground beef will do in a pinch, but you lose those tender marinated ribbons that make bulgogi, well, bulgogi.
• The pancake mix. Assi Pancake Mix keeps this fast, but any Korean pajeon or buchim mix works. No mix on hand? A simple batter of flour, a little cornstarch for crunch, an egg, and cold water does the job. Cold water and cornstarch are your friends for maximum crisp.
• The cheese. Mozzarella is the classic melty pull here, but provolone or Monterey Jack melt just as nicely. This is the same bulgogi-and-cheese idea I love in my bulgogi cheesesteak, just stacked between pancakes instead of stuffed in a hoagie.
• The veggies. Totally swappable. Carrot, bell pepper, cabbage, or extra scallion all work great, and you can skip the jalapeno if heat isn’t your thing. Just keep everything sliced thin so the pancake cooks evenly, and use whatever you’ve got wilting in the crisper drawer.
• The bulgogi sauce. Bottled Assi keeps it quick, but any Korean bulgogi marinade works. You can also build your own from soy sauce, brown sugar, garlic, sesame oil, and a grated pear.

Instructions

1. Combine the beef, sliced yellow onion, and bulgogi sauce in a freezer bag. Toss so the beef is fully coated and refrigerate for at least 30 minutes.
2. Cook the marinated beef and onions in a large pan over medium heat until done. Set aside, leaving most of the excess liquid behind.
3. Slice all the veggies and add them to a large bowl. Pour in the pancake mix and water, then stir until the veggies are completely coated.
4. Heat a generous amount of vegetable oil in a small nonstick pan over medium heat. Give the veggie mixture one more stir and add half of it to the pan, spreading it into a thin, even layer.
5. Cook about 5 minutes until the bottom is golden and crispy, swirling the pan occasionally so it doesn’t stick. Flip and cook another 4 minutes, or until golden on the other side.
6. Lay a slice of mozzarella on top and cover the pan until the cheese melts. Set aside and repeat with the rest of the veggie mixture for the second pancake.
7. Place half the bulgogi on one pancake and top it with the other pancake to make a sandwich. Repeat for the second serving, then slice and grub on!

What Do You Serve With Bulgogi Pajeon?

This sandwich eats like a whole meal on its own, but a few sides round it out into a real spread. A simple soy-and-rice-vinegar dipping sauce with a little chili oil is the traditional move for any pajeon, and it cuts right through the richness (Just One Cookbook has a great one you can riff on). Beyond that, a bowl of kimchi, some quick pickled cucumbers, or a light green salad all balance out the cheesy, savory beef. And if you’re making this for a hang, cut the sandwiches into wedges and set out extra dipping sauce, because they disappear fast!

Look, this bulgogi pajeon sandwich is peak “why did I not think of this sooner” energy. Two crispy Korean pancakes, sweet-savory beef, melty cheese, and about 30 minutes once the beef is marinated. It’s not fancy, it’s not complicated, but it’s SO satisfying!

I love this one for a weekend lunch when I want something a little extra, or anytime I’m craving Korean comfort food but want it in handheld, mashed-up form. It’s the kind of thing that makes people stop and ask what they’re even eating, and I’m always here for that.

If you make this bulgogi pajeon sandwich, drop a star rating on the recipe card below and leave a comment to let me know how crispy you got your pancakes. I really want to know! 🙌

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