Chicken Katsu Sandwich

Name: Chicken Katsu Sandwich
Prep time: 15 min
Cook time: 20 min
Total time: 35 min
Yield: 2.0
Ingredients: 2 boneless, skinless chicken breasts; 1 cup all-purpose flour; 2 large eggs; 1 cup panko breadcrumbs; Salt and pepper to taste; Vegetable oil for frying; 1/4 cup ketchup; 2 tablespoons soy sauce; 1 tablespoon Worcestershire sauce; 1 teaspoon sugar; 1 teaspoon Dijon mustard; 2 soft sandwich rolls; Shredded cabbage; Sliced pickles (optional); Sliced green onions (optional)

Highlighted under: World Cuisine

I have to confess, I’m not the best at frying things. So when I finally nailed this chicken katsu sandwich, I felt pretty proud of myself. The crunchy coating and juicy inside made all the mess worth it, especially when my partner couldn’t stop raving about it. I never thought I’d get the hang of frying at home, but this recipe made it actually enjoyable!

Created by

The Simplecooktips Team

Last updated on 2026-06-04T10:02:19.409Z

The first time I tried making this sandwich, I had oil splatters all over my kitchen. But honestly, it was so worth it when I took that first bite. The chicken was crispy but tender, and the sauce added a nice kick. I learned to control the heat better so my oil wouldn’t smoke, and it really made a difference!

The Best Part

Crispy panko coating that's not too heavy
You probably have most ingredients already
Leftovers taste great the next day

Choosing Your Ingredients

For this chicken katsu sandwich, it's all about the chicken. Go for boneless, skinless breasts since they cook evenly and stay juicy. If you're really in a pinch, you can use chicken thighs, just be aware they may take a bit longer to cook through.

The panko breadcrumbs are crucial for that crunch, so try to use those instead of regular breadcrumbs. If you can’t find panko, coarsely crushed cornflakes can work in a pinch; they give a nice crunch too but have a different texture. Don’t forget to taste your tonkatsu sauce as you mix—it might need a little extra sweetness or a pinch of salt depending on your preference!

A Quick Note on Chicken Katsu Sandwich

When you're frying, the oil temperature really matters. I usually test with a few breadcrumbs first; if they sizzle right away, you're all set. If you add the chicken and it doesn't bubble around the edges, your oil might not be hot enough, which could lead to soggy breading. Trust me, I've been there!

As for the sandwich, I love adding shredded cabbage for crunch, but you can replace it with other greens like arugula or even use kimchi if you want to spice things up a bit. And if you get any chicken leftovers, they hold up surprisingly well in the fridge. Just keep them in an airtight container, and you'll have a tasty snack the next day on a salad or as another sandwich. I personally think a little mustard mixed with mayo can spruce up the leftovers even more!

Ingredients

You’ll need a few key ingredients to get started with this delightful sandwich.

For the Chicken Katsu

2 boneless, skinless chicken breasts
1 cup all-purpose flour
2 large eggs
1 cup panko breadcrumbs
Salt and pepper to taste
Vegetable oil for frying

For the Tonkatsu Sauce

1/4 cup ketchup
2 tablespoons soy sauce
1 tablespoon Worcestershire sauce
1 teaspoon sugar
1 teaspoon Dijon mustard

For Assembling

2 soft sandwich rolls
Shredded cabbage
Sliced pickles (optional)
Sliced green onions (optional)

Once you’ve gathered everything, you’re ready to start cooking!

Instructions

Let’s dive into making this delicious chicken katsu sandwich.

Prepare the Chicken

First, take the chicken breasts and pound them to about 1/2 inch thickness between two sheets of plastic wrap. This helps them cook evenly. Season both sides with salt and pepper.

Set Up the Breading Station

Get three shallow dishes ready: one with flour, one with beaten eggs, and one with panko breadcrumbs. The order is key here, so remember flour, then egg, then breadcrumbs.

Bread the Chicken

Dredge each chicken breast in flour first, shaking off excess. Then dip it into the egg, ensuring it gets completely coated. Finally, press it into the panko breadcrumbs until well covered. I usually give it a gentle pat to make sure the breadcrumbs stick!

Fry the Chicken

In a large skillet, heat about 1/4 inch of vegetable oil over medium heat. When it’s hot enough (a breadcrumb should sizzle upon contact), carefully add the chicken. Cook for 4-5 minutes on each side until golden brown. Be careful not to overcrowd the pan, or it won’t fry properly!

Make the Sauce

While the chicken is frying, mix ketchup, soy sauce, Worcestershire sauce, sugar, and mustard in a small bowl. Tasting it is a must—adjust the seasonings to your liking!

Assemble Your Sandwich

Once the chicken is done, let it rest on a paper towel to absorb excess oil. Slice the chicken, layer it on the sandwich rolls, top with shredded cabbage, pickles, and drizzle with your homemade sauce. Honestly, the crunch from the cabbage really adds something special!

And that’s it! Enjoy your homemade chicken katsu sandwich!

Pro Tips

Try marinating the chicken in a bit of soy sauce before breading for an extra kick.
If you’re cutting calories, you can bake the chicken instead of frying it, just keep an eye on the time.
Save any extra tonkatsu sauce for dipping or drizzling on other dishes.

How to Store Chicken Katsu Sandwich

After assembling your sandwiches, it's best to eat them right away for that delightful crunch. But if you do have to store them, keep the chicken and toppings separate from the buns to avoid sogginess. Wrap the chicken tightly and place it in an airtight container. The cabbage should be in a bag or container on its own. This way, reheating the chicken in a skillet or air fryer can help restore some of its crispiness.

If you've already made a complete sandwich, you can refrigerate it, but expect the texture to change a bit. For reheating, try popping it into a toaster oven if you have one. It'll help crisp up the bread and warm the chicken without making it rubbery.

Ways to Switch It Up

Feeling adventurous? Swap the chicken for pork loin to make a traditional tonkatsu sandwich. Just follow the same steps for breading and frying. You can also play with spices in your tonkatsu sauce. A little chili powder or sriracha can add some heat if you're into that.

And let's not forget about toppings. If you want extra crunch, top the katsu with some fried onion straws or even avocado slices for a creamy contrast. I sometimes try different breads too—ciabatta or even pretzel rolls can add a fun twist to the sandwich. Honestly, make it yours, and have fun with it!

Questions About Recipes

→ Can I make this sandwich in advance?

You can, but the chicken is best served fresh to keep that crunch. If you must prep, I’d store the components separate and assemble right before eating.

→ What can I use instead of panko breadcrumbs?

You can use regular breadcrumbs in a pinch, but they don’t have the same crunch. I suggest crushing some cornflakes or using crushed crackers as a fun alternative.

→ How can I make this gluten-free?

Substituting with almond flour or gluten-free breadcrumbs should work just fine. I’ve tried them both, and they were tasty!