Learn how to make the Hawaiian comfort food Loco Moco that’s quite popular in Japan. You’ll love the hot steamed rice and tender hamburger steak smothered with savory mushroom gravy and topped with a fried egg in my Japanese-inspired recipe.

An oval dish containing Hawaiian dish called Loco Moco, consisting of hamburger steak, beef gravy, and fried egg over the steamed rice.

Loco Moco is one of the signature Hawaiian dishes that is extremely popular in the Aloha state and also in Japan. I grew up eating this Japanese-influenced American-style hamburger at family restaurants that served up amazing lines of comfort dishes. Yes, we love hamburgers in Japan.

These days, I love making loco moco whenever my kids have any sports activities and would get super ravenous for dinner. Juicy hamburger steak with fried egg and rice—that’s a combo to feed hungry kids!

An oval dish containing Hawaiian dish called Loco Moco, consisting of hamburger steak, beef gravy, and fried egg over the steamed rice.

What is Loco Moco?

First, we must talk about the name, of course. How did a burger with a rice dish get this catchy name? What does loco moco mean in Hawaiian? Well, loco is the Spanish word for crazy and moco means burger. 

According to one of the popular theories, loco moco was first made in the late 1940s by Ms. Nancy Inouye of the Lincoln Grill restaurant in Hilo, Hawaii. She was asked by a group of young surfers to make them something cheap, good, and extremely filling. Their request was met when she served them a dish with a huge plate of white rice topped with a burger patty and brown gravy!

Satisfied, the surfers named the dish after one of their buddies George Okimoto, whose nickname was “crazy”. George Takahashi, a student at Hilo High School, was studying Spanish at the time and decided to call it loco since it rhymes with moco. So, here we have the story of loco moco.

There are many variations of loco moco, but the traditional loco moco consists of white steamed rice, topped with a juicy hamburger steak, flavorful gravy, and a fried egg. The egg is usually cooked sunny side up so the runny egg yolk adds a yummy richness to the dish. 

Besides beef patty, loco moco is sometimes topped with spam, shrimp, bacon, tofu, teriyaki beef and chicken too.

Loco Moco in Japan

Outside of Hawaii, loco moco (ロコモコ) is just as popular in Japan and usually served in cafe-style restaurants, yoshoku (Japanese-western) restaurants, or enjoyed at home. Since Hawaii is no. 1 travel destination for the Japanese, we naturally adopted this delicious dish and made it part of our menu.

However, the typical Japanese version of loco moco is served with thick “hambagu sauce”, which is made of ketchup and Worcestershire sauce (or tonkatsu sauce) instead of traditional gravy made of beef broth or stock. The recipe I’m sharing today is my own take on the traditional loco moco.

An oval dish containing Hawaiian dish called Loco Moco, consisting of hamburger steak, beef gravy, and fried egg over the steamed rice.

Why You Should Make this Recipe

  • Incredibly juicy and tender hamburger patty! I use my Hambagu recipe for the meat patty which uses both ground beef and pork. The ground pork adds additional flavors and makes really juicy patties compared to using ground beef only.
  • Caramelized onions for meat patties and gravy. This might seem like an extra step but caramelized onions add a big depth of flavor and sweetness to both meat patties and gravy.
  • Easy to make and freezer-friendly! You can store the patties in the refrigerator for 3 days or in the freezer for a month.

How to Make Loco Moco

The Ingredients You’ll Need

  • A combination of ground beef and ground pork 
  • Onion
  • Egg
  • Panko
  • Milk
  • Seasonings: Worcestershire sauce, nutmeg, salt, pepper, butter
  • Gravy: Button mushrooms, olive oil, beef stock, Worcestershire sauce, soy sauce, salt, pepper, potato/corn starch

The Cooking Steps

  1. Caramelize the chopped onions and use them for both gravy and hamburger patties.
  2. Make the gravy in the pot and set aside.
  3. Make the hamburger patties. The way we make loco moco burgers is very similar to Japanese hambagu steaks.
  4. Cook the patties and serve with the gravy.
Jump to Recipe
An oval dish containing Hawaiian dish called Loco Moco, consisting of hamburger steak, beef gravy, and fried egg over the steamed rice.

How to Serve Loco Moco

Serve steamed rice on individual plates. Transfer the patties to the plates, pour the gravy, and top with a fried egg. Enjoy immediately!

You can store leftover hamburger patties in an airtight container and keep in the refrigerator for 3 days or in the freezer for a month.

Whether it’s for lunch or supper, this dish is very easy to make and will be ready in less than 45 minutes. It’s a wonderful comfort meal on any day of the week. I hope you enjoy my version of loco moco recipe.

Now, many of my readers are from Hawaii. What’s your favorite style of loco moco and how do you prepare it? Please feel free to share your recipe in the comment below so we all can try it out!

More Hawaiian-Inspired Recipes You’ll Love

Cook for Maui Cooking Challenge. Choose one of the five recipes, including poke bowl, loco moco, butter mochi

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An oval dish containing Hawaiian dish called Loco Moco, consisting of hamburger steak, beef gravy, and fried egg over the steamed rice.

Loco Moco

4.91 from 138 votes
Learn how to make the Hawaiian comfort food Loco Moco that's quite popular in Japan. You’ll love the hot steamed rice and tender hamburger steak smothered with savory mushroom gravy and topped with a fried egg in my Japanese-inspired recipe.

Video

Prep Time: 20 minutes
Cook Time: 20 minutes
Chilling Time: 30 minutes
Total Time: 40 minutes
Servings: 4

Ingredients
 
 

  • 1 onion (divided)
  • 1 Tbsp extra virgin olive oil

For the Gravy (make double if you like extra)

For the Hamburger Steak

  • ½ lb ground beef
  • ¼ lb ground pork
  • cup panko (Japanese breadcrumbs)
  • 1 large egg (50 g each w/o shell)
  • 2 Tbsp milk
  • 1 tsp Worcestershire sauce
  • ½ tsp nutmeg
  • 1 tsp Diamond Crystal kosher salt
  • tsp freshly ground black pepper
  • ½ Tbsp extra virgin olive oil (for cooking)

For the Fried Eggs

  • 4 large eggs (50 g each w/o shell)
  • ½ Tbsp extra virgin olive oil (for frying)

For Serving

  • 4 servings cooked Japanese short-grain rice (typically 1 cup (150 g) per serving)
  • 1 sprig parsley (for garnish)
Japanese Ingredient Substitution: If you want substitutes for Japanese condiments and ingredients, click here.

Instructions
 

  • Please note that the hamburger patties require 30 minutes of chilling time before cooking. For the steamed rice, 1½ cups (2 rice cooker cups, 300 g) of uncooked Japanese short-grain rice yield roughly 4 servings (4⅓ cups, 660 g) of cooked rice. See how to cook it with a rice cooker, pot over the stove, Instant Pot, or donabe.
    Now, gather all the ingredients.
    Loco Moco Ingredients

To Sauté the Onion

  • Mince 1 onion finely. I use the mijingiri cutting technique.
    Loco Moco 1_w580
  • Heat 1 Tbsp extra virgin olive oil in a large pan on medium-high heat and sauté the onion until translucent.
    Loco Moco 2_w580
  • Turn off the heat. Divide the sautéed onion to use for the gravy and the hamburger patties.
    Loco Moco 3

To Make the Gravy

  • Cut 6 button mushrooms into thin slices. Heat a small saucepan on medium heat. Then, add ½ Tbsp extra virgin olive oil and the mushrooms and sauté until soft. Add half of the sautéed onion and stir together.
    Loco Moco 4_w580
  • Add 1½ cups beef stock/broth, 1 tsp Worcestershire sauce, and 1 tsp soy sauce.
    Loco Moco 5_w580
  • Skim off the scum and foam from the surface with a fine-mesh skimmer. Then, season with Diamond Crystal kosher salt to taste and ⅛ tsp freshly ground black pepper.
    Loco Moco 6_w580
  • Make a slurry with 1 Tbsp potato starch or cornstarch and 1 Tbsp water in a small bowl and whisk well to combine. Pour it into the gravy and thoroughly mix together. Simmer until the gravy thickens, then turn off the heat and set aside.
    Loco Moco 7_w580

To Make the Patties

  • Add ½ lb ground beef, ¼ lb ground pork, and the other half of the sautéed onion to a large bowl. Add ⅓ cup panko (Japanese breadcrumbs), 1 large egg (50 g each w/o shell), 2 Tbsp milk, 1 tsp Worcestershire sauce, ½ tsp nutmeg, 1 tsp Diamond Crystal kosher salt, and ⅛ tsp freshly ground black pepper.
    Loco Moco 8_w580
  • Knead together well using your hand until the mixture becomes sticky and pale. Then, divide into 4 portions for large patties or 6 portions for medium patties.
    Loco Moco 9_w580
  • Toss a portion from one hand to the other about 5 times; this releases the air inside and prevents cracking during cooking. Then, make an oval-shaped patty with a slightly rounded top. Place on a plate or tray. Repeat with the other portions. Cover with plastic wrap and rest them in the refrigerator for at least 30 minutes so that the meat melds and the fat solidifies.
    Loco Moco 10_w580

To Cook the Hamburger Steaks

  • Heat a large pan over medium heat, then add ½ Tbsp extra virgin olive oil. Place the patties gently in the pan. (Fry in batches if you‘re doubling the recipe.) Indent the center of each patty with 2 fingers because the meat will rise with the heat. Fry them for about 5 minutes or until browned on the bottom. Flip over, then cover with a lid and fry until thoroughly cooked inside, about 5 minutes (depending on the thickness of the patties). At this time, reheat the gravy and make the fried eggs with 4 large eggs (50 g each w/o shell) and ½ Tbsp extra virgin olive oil.
    Loco Moco 11_w580

To Serve

  • Divide 4 servings cooked Japanese short-grain rice on individual plates. Transfer the patties to the plates, pour the gravy on top, and top each with a fried egg. Chop 1 sprig parsley and sprinkle on top for garnish. Serve immediately.
    Loco Moco 12_w580

To Store

  • You can keep the leftovers in an airtight container and store in the refrigerator for 3 days or in the freezer for a month.

Nutrition

Calories: 571 kcal · Carbohydrates: 39 g · Protein: 29 g · Fat: 33 g · Saturated Fat: 10 g · Trans Fat: 1 g · Cholesterol: 294 mg · Sodium: 614 mg · Potassium: 707 mg · Fiber: 1 g · Sugar: 4 g · Vitamin A: 375 IU · Vitamin C: 4 mg · Calcium: 90 mg · Iron: 5 mg
Author: Namiko Hirasawa Chen
Course: Main Course
Cuisine: Japanese
Keyword: beef, hamburger steak, pork
©JustOneCookbook.com Content and photographs are copyright protected. Sharing of this recipe is both encouraged and appreciated. Copying and/or pasting full recipes to any website or social media is strictly prohibited. Please view my photo use policy here.
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4.91 from 138 votes (96 ratings without comment)
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I love this dish. I haven’t tried one before and by following the recipe, i was very happy with the result and flavour. The pattie was tender and juicy after cooking. And what’s importantt was it was a hit in the dinner table. Thanks for sharing Nami. 😊5 stars

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Hello, Carol! Thank you for trying Nami’s recipe!
We’re delighted you and your family liked the Loco Moco! The photo of Loco Moco is fantastic!

This was a hit today, even for my kid who skipped the rice. He came back for more. Definitely will make it again.5 stars

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Hi Candy! We are so happy to hear you and your family enjoyed the dish.
Thank you so much for trying Nami’s recipe! Your Loco Moco looks delicious!

This tasted so yummy that I am going to take some to my mom and dad for lunch tomorrow (which doesn’t happen often as my mom is an amazing chef and I feel like I can never make anything worthy enough!) It tasted just like the ones we tried in Hawaii earlier this year so I won’t have to wait to go back when I get a craving for it. I love your step-by-step instructions – makes things so much easier for a novice chef. #JOCcookingchallenge5 stars

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Hello, Yumi! Aww. We’re delighted you enjoyed Nami’s recipe.
We hope it was enjoyable for your parents as well.
Thank you so much for including the Loco Moco picture!

Yup, this is definitely being added into the rotation at my house! It’s not only comforting and filling, but it’s not heavy!
I don’t think I would have tried this dish, but I’m thrilled to find a new-to-me recipe!
The flavors were delicious & the meat was so tender! Super easy to make!!5 stars

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Hello, Katie! Aww. We are so happy to hear that this will be included in your rotation menu!
Thank you for the kind words and for sending us your Loco Moco photo!

Super easy and yummy!

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Hi Kaytlin! Thank you so much for trying Nami’s recipe and sharing the photo of your Loco Moco with us!

I subbed in firm tofu for the ground pork and the beef/tofu combo turned out fantastic, super juicy and soft. Thanks for another wonderful recipe Nami!

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Hi Lisa! Wow! Excellent idea! Thank you so much for trying Nami’s recipe and sharing your cooking experience and photo!

Worked well for me5 stars

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Hi Andrew! We are glad to hear that Nami’s recipe worked well for you!
Thank you for posting your Loco Moco photo!

What a delicious and easy recipe! I added a few extra mushrooms because I happen to love them and needed to use them up. The flavor is great and the egg on top is the best!5 stars

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Hi Adrienne, Aww. We are glad to hear you enjoyed Nami’s recipe!
Thank you for posting your Loco Moco photo!

This was delicious! It was my first time trying it and the flavor complimented each other so well. I used ground turkey instead because I don’t like ground beef. I can’t remember eating a juicer, more flavorful, and softer turkey burger.5 stars

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Hello, Teresa! We’re delighted to hear the ground turkey turned out nicely for you!
Thank you very much for sharing your experience and the photo!

The recipe was easy to follow. I really liked the gravy. Next time I will seve grillid pineapple on the side with it5 stars

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Hello, Diane! Wow! Grilled pineapple sounds delicious!
Thank you for sharing your Loco Moco photo with us.🤗

Super yummy!5 stars

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Hi Kelly! Yay! Thank you so much for trying Nami’s recipe!
It looks delicious!

Everyone has beautiful photos! Mine is not as pretty.
I found it easy to make, I did as much as I could the day before and then the day of I made the patties and eggs.

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Rice is from Japanese rice factory NY, you can choose percent you’d like your rice milled I believe this is 30%

Hi Kas! wow! That is fantastic! Thank you for trying Nami’s recipe and sharing your cooking experience and photo with us!

Delicious!5 stars

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Hi Porcupine! Wow! Looks wonderful!
Thank you so much for trying Nami’s recipe!

Just made this last night! It might not look the prettiest, but it tastes delicious. Thanks for the delicious recipe!5 stars

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Hello, Grayce! Thank you for trying Nami’s recipe and taking the photo!
We like how you served the cabbage on the side. Don’t worry! It looks fantastic!🤩

Gravy was so savoury and patty was so juicy! Comfort food for sure. Love this!5 stars

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Hello, Kai Lin! Wow! Excellent work! We are so happy to hear that you found this to be comfort food.
Thank you for trying Nami’s recipe and sharing your Loco Moco photo.
Happy Cooking!🙂