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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This dish was super juicy and delicious with rich flavor and a lovely texture to the patty. Thanks for the great recipe!5 stars

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Hi Julia! Thank you for sharing your Loco Moco photo! It looks so delicious!
We are glad to hear you enjoyed Nami’s recipe. 🙂

Instant hit with family! My husband loved it, he grew up in Hawaii. His only confused comment was “you didn’t use instant gravy”? 😂 This is definitely getting put into dinner rotation. Only substituted in ground turkey for dietary needs.5 stars

Hi Kirsten! Yes! Homemade gravy is the best!😁
Thank you so much for trying Nami’s recipe and sharing the experience with us.

I made this for dinner tonight as part of the September 2023 recipe challenge, and part of my personal challenge to cook Japanese recipes (including yoshoku). It was a big hit with the family, especially since everyone could customize their own bowl.5 stars

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Hi Erica! Aww! We love that you watched Nami’s instructional video too! ☺️ Thank you so much for trying out Nami’s recipe and sharing your feedback and photo with us.
We hope your wish will come true so that the other side of Daruma’s eye can be filled. 🙏🏻

I made this last night for dinner, and it was A-MAZING! It was suer quick and simple to put together and made a fully flavored and satisfying meal that I will definitely be reaching for again. Thank you for sharing!5 stars

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Hi Ashton! Wow! Thank you for sharing your Loco Moco photo with us! It looks so delicious!🤩
Thank you for trying Nami’s recipe. Happy Cooking!

First time we made Loco Moco at home– it was so delightful and filling. Instructions were easy to follow, the dish so easy to prepare and the taste was out of this world delicious! We know it will become a staple in our family.5 stars

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Hello, Renata! Your Loco Moco looks delicious! 🤩
Thank you for trying Nami’s recipe and providing positive feedback. We’re glad Nami’s instructions helped.
Happy Cooking!

Easy to follow directions, I wanted to try loco moco but the restaurant for it closed. Glad there’s a good recipe for it. It was tasty and my family liked it.5 stars

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Hi Bella! We are glad to hear you enjoyed homemade Loco Moco!
Thank you for sharing your Loco Moco photo with us! Happy Cooking!

Loco moco has to be one of the best dishes out there to know how to cook. American cuisine is within my top 5 in the world, and this overlooked gem (at least in my corner of the world, Australia) is a key example of why. I have a version that I fall back on for late nights after work and such. It tastes so wholesome and filling – more of these weight-trainers should put it on their radar.

Plus, to get the best experience out of eating it in the homeland – go to somewhere that looks like an absolute dive. I tried it in Hawaii at an airport (I can’t remember the exact one, but it was one of the smaller islands) canteen, and it was worth the wait. Since then, I put it on the backup as a recipe to cook at short notice.

Best yet, you can customise the meal without changing the complexion too much.

Hi Mikey! Thank you very much for reading Nami’s post and for your input!
Loco Moco in Hawaii sounds worth the wait! We hope we have a chance to try it soon too.😋

I made this recipe and it is delicious. But now my boyfriend is on a paleo/keto diet. Any suggestions with how to change this recipe?5 stars

Hi Sarah! Thank you very much for trying Nami’s recipe and for your kind feedback!
The high carbs foods are onion, Panko, and steamed rice in this recipe and have to be replaced with something to fit the keto diet.
You can try using dried onions or shallots for onions. Replace Panko with tofu. Rice can be replaced with cauliflower rice. What do you think?
We hope this is helpful.

A+ recipe! Made this for dinner last night and it was a big hit. So easy and so tasty. Thank you!5 stars

Hi Julia! Thank you very much for trying this recipe and for your kind feedback!
We are so happy to hear you enjoyed it!😊

Lookin forward to trying this, Namiko. Traditional loco moco doesn’t appeal to me all that much–probably because I am not a fan of ketchup–but yours looks yummy. I plan to make it for a weeknight meal sometime next week. Thank you again for sharing great recipes.5 stars

Hi Danni! Thank you very much for your kind feedback!
Nami and JOC team are glad to hear you enjoy this post! We hope you like Nami’s Loco Moco flavor!

Excellent gravy recipe, which i served over my premade hamburger patties, topped with fried egg. Absolutely delicious!5 stars

Hi Tk, Thank you very much for trying this recipe and for your kind feedback! We are so happy to hear it turned out delicious!

Absolutely delicious! My husband loves Loco Moco and enjoyed having this dish elevated with the mushroom and onion gravy. Looking forward to sharing this dish/recipe with the family. Thank you for yet another delicious meal. Truly enjoy your blog.5 stars

Hi Carla, Thank you very much for trying this recipe and for your kind feedback! We are so glad to hear your husband enjoyed it!

This was delicious! Used Impossible meat and it was (probably) just as good!5 stars

Hi Andrea!
Thank you very much for trying this recipe and for your kind feedback!
We are glad to hear it turned out delicious! 😊

I made this the other night and it was super-flavorful, even without the mushroom sauce. (Next time, I will skip the superfluous sauce).
The dish was better the next day.
Thanks for your excellent blog!

Hi Tery,
Thank you very much for trying this recipe and for your kind feedback! We are so happy to hear you enjoy this dish.
Thank you for sharing your cooking experience with us!☺️

What kind of mushrooms did you use?5 stars