Soft and chewy Hawaiian Butter Mochi is an iconic Hawaiian treat made with sweet rice flour, which also happens to be gluten free. It will transport you to the island of Hawaii in just one bite!

A stack of Hawaiian Butter Mochi on a plate.

Is it weird to describe a dessert as satisfyingly squishy? Biting into this butter mochi is like hugging one of my daughter’s squishmallows! It’s rich, chewy, coconut-y, comforting and just delightful overall. Give it a try, I promise you it will be a big hit with your family!

My first exposure to Hawaiian butter mochi was actually well before I ever travelled to Hawaii via these coconut mochi muffins that my husband’s aunt used to make, I just didn’t know it then! But after traveling to Maui, I have to say I’m totally hooked, I need to have them in every flavor: chocolate brownie mochi (or Brochi), mini Matcha green tea mochi and guava mochi. And believe me, I plan to make more!

Helpful tools

The best thing about this recipe is that you don’t need any special tools at all to make it! All you need are a really large mixing bowl and your whisk to mix the batter, along with a 9″x13″ baking pan to bake it in. But a stand mixer would be very useful due to the large volume of the batter.

Ingredients and substitutions

As always, you’ll find the complete list of ingredients and quantities in the recipe card at the end of this post. Below are some notes and substitution tips:

Hawaiian Butter Mochi ingredients on a baking tray.
  1. Mochiko – is one of the main ingredients. It is a sweet rice flour, also known as glutinous rice flour. This type of rice has a shorter grain and is very sticky when cooked. You need to purchase the correct type of rice flour for this recipe to work. I typically use Koda Farms Mochiko, as pictured. You should be able to find this at most Asian grocery stores. My local Stater Bros carries it in the Asian or International aisle. I expect the recipe to work fine with other brand of sweet rice flour as well. But I must stress that you need to buy Mochiko or sweet rice flour, not regular rice flour. Regular rice is not as sticky as sweet rice and the texture will not be the same. And absolutely DO NOT substitute regular flour here.
  1. Coconut cream or milk – I used unsweetened canned coconut cream and sometimes just unsweetened canned coconut milk. The coconut cream has slightly higher fat content. Before I could only find coconut cream at Sprouts but I notice recently they have been easier to find. Any brand will work, you will find a variety at Asian grocery stores and pretty much any supermarket nowadays. But I will note that you need to use the canned coconut milk and not the refrigerated carton coconut milk, those are lighter and more watery. For the best traditional butter mochi, definitely stick to coconut cream or milk. But half and half (or unsweetened coffee cream) is a good substitute due to the similar fat content.
  1. Evaporated milk – adds another layer of creamy rich taste to this butter mochi. You can make your own evaporated milk by simmering whole milk until the volume is reduced by half or use a mixture of whole milk + half and half (3:1) or whole milk + cream (7:1).
  1. Unsalted butter – no additional salt is called for in this recipe so I don’t recommend substituting salted butter.
  1. Sugar – granulated sugar works fine for this recipe but if you want to add a little bit more flavor depth, you can use brown sugar.
  1. Eggs – we are using lots of eggs in this recipe to bind the ingredients and to add richness also.
  1. Pure vanilla extract – for the best flavor, avoid imitation vanilla flavoring. While the dominant flavor is coconut here, I think adding a little bit of vanilla adds depth and complexity.
  1. Baking powder – baking soda is not a substitution for baking powder. Baking soda needs an acidic environment to work and this recipe does not provide that. You must use baking powder.
  1. Coconut – may or may not be a traditional ingredient in Hawaiian butter mochi, but I like the addition for extra coconut flavor and another layer of texture. If you prefer a completely smooth batter, you can omit these. You can also us different mix-in like crushed macadamia nuts for example.

How to make Hawaiian butter mochi

The following instructions, step-by-step photos, and tips are here to help you visualize how to make the recipe. You can always skip straight to the printable recipe card at the end of this post.

Mix together the melted butter and sugar in a large mixing bowl.

Mixing melted butter and sugar in a mixing bowl with a whisk.

Beat in the eggs one at a time, and then add the rest of the wet ingredients: coconut milk, evaporated milk, and vanilla.

Beating in eggs and wet ingredients.

Tip: If you’re using a stand mixer, you can add all the wet ingredients altogether at the same time. But when you’re incorporating the ingredients by hand, it’s easier to do it one at a time.

Now add the dry ingredients: mochiko and baking powder. Stir until completely smooth and fold in the coconut.

Mix shredded coconut into Hawaiian Butter Mochi batter.

Transfer to a buttered baking pan and bake until golden brown and cooked through.

Pouring Hawaiian Butter Mochi batter into a baking pan and bake until golden brown.

More baker’s tips

  • This recipe is gluten free since there is no wheat flour in it. Even though the rice flour is called “glutinous rice flour”, there is no gluten in it.
  • You can bake this recipe in two 8”x8” baking pans. I have not done this myself but some readers have. The baking time will need to be shortened, I suggest checking around 25 – 30 minutes for doneness and continue baking as needed.
  • The baking time can vary from 50 minutes up to 75 minutes depending on your oven temperature. If the top starts to get too brown but the inside is not done, tent it with a large piece of foil to keep the top from burning.
  • This recipe will make at least 24 servings and possibly more if you cut them smaller. For a smaller batch, try these mini coconut mochi muffins, they are also a little bit lighter as well.

Storage

Butter mochi tastes best when fresh, especially because this type of treat can lose its bounciness when it is days old. But reheating it can make it tender and moist again.

It will keep at room temperature for a couple of days. Because it is a very moist treat, if kept out too long it can go bad, especially in very warm weather. In this case, it is best to refrigerate leftovers, it will last up to 2 weeks.

Freezing instructions

You can definitely freeze these to store them even longer. I recommend wrap individual portion well in plastic and/or foil, then place them in a freezer bag and freeze for up to 3 months. Thaw completely at room temperature before serving.

Reheating instructions

Refrigerated and frozen butter mochi will lose their bounciness once thawed. I highly recommend warming them up in the microwave for about 20 seconds to soften them. To microwave, make sure your mochi wrapped in plastic or a damp paper towel to keep it from drying out.

Picking up a piece of butter mochi from a plate.

FAQs

Can I use shiratamako instead of mochiko?

Shiratamako is another type of sweet rice flour, but it comes in larger lumps and not as a fine powder like Mochiko. If you have shiratamako handy, I expect you can use it in place of Mochiko, after you break up the lumps.

However, it’s actually a lot more expensive due to the difference in processing method, so you better save it for making other types of more refined Japanese mochi confections. Nami from Just One Cookbook has a detailed post about Shiratamako and how it differs from Mochiko if you’re interested.

What is Hawaiian Butter Mochi?

Hawaiian Butter Mochi is a local Hawaiian treat made with sweet rice flour, also called glutinous rice flour, along with butter, eggs, coconut milk, evaporated milk, and a few other typical ingredients such as sugar, baking powder and vanilla extract. Coconut flakes or other fillings can be added to create different variations.

The butter mochi is baked like you would a sheet cake in a 9”x13” baking pan, and then divided into smaller portions for serving. You can consider it a type of cake, but locals don’t call it a Mochi cake, simply butter mochi or Hawaiian butter mochi will do.

Is this the same as Japanese Mochi?

NO. Japanese mochi is typically made with steamed sweet rice, pounded until smooth and stretchy, then it is formed into balls or smaller portions. Japanese mochi can be plain, or filled with sweet red bean paste, or infused with other flavors. But this type of mochi is not baked and is completely different from Hawaiian butter mochi.

Did you know there is also a version of Japanese Butter Mochi?

Fun fact: there is also a version of Japanese Butter Mochi, only made in the Akita prefecture in northern Japan. This version of Akita butter mochi is also made with pounded steamed sweet rice and then melted butter, sugar and egg yolks are kneaded into the already smooth and stretchy mochi.

Again, this type of mochi is not baked, and resembles the traditional Japanese mochi more than the Hawaiian mochi due to the way it is made. I learned about Japanese butter mochi via TabiEats, one of my favorite Youtubers for all things Japanese food and travel.

Holding up a half eaten slice of Hawaiian Butter Mochi.

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4.95 from 17 votes

Hawaiian Butter Mochi

Soft and chewy Hawaiian Butter Mochi is an iconic Hawaiian treat made with sweet rice flour or glutinous rice flour. It will transport you to the island of Hawaii in just one bite!
Servings: 24 2″ square pieces
Holding up a half eaten slice of Hawaiian Butter Mochi.
Prep Time: 15 minutes
Cook Time: 50 minutes
Total Time: 1 hour 5 minutes

Ingredients 

  • 4 oz unsalted butter, melted & cooled slightly
  • 2 cup granulated sugar, 400 g
  • 1 teaspoon pure vanilla extract
  • 4 large eggs
  • 1 can evaporated milk, 12 oz
  • 1 can unsweetened coconut cream, or coconut milk, 13.5 oz
  • 1 box of Mochiko, 16 oz
  • 2 teaspoon baking powder
  • 1 cup unsweetened shredded coconut, 80 g
  • Extra butter for pan

Instructions 

  • Preheat the oven to 350°F.
  • Brush some melted butter all over a 9”x13” baking pan and set aside.
  • Add melted butter and sugar to a large mixing bowl (or the stand mixer bowl) and mix well to combine.
  • Add vanilla, eggs, evaporated milk, coconut cream and beat until smooth.
  • Stir in mochiko and baking powder and mix until completely smooth.
  • Fold in the shredded coconut.
  • Pour the mixture into the prepared pan and bake for about 50 minutes (or longer if necessary) until the top is golden brown and a toothpick inserted in the middle comes out mostly clean with just a few crumbs attached.
  • Allow to cool completely before cutting and serving.
  • Sprinkle toasted coconut flakes over the top if desired.

Video

Notes

  • This recipe is gluten free.
  • There is no substitution for mochiko (sweet rice flour)
  • Be sure to use canned coconut cream or canned coconut milk and not the carton variety.
  • The baking time can vary from 50 minutes up to 75 minutes depending on your oven temperature. If the top starts to get too brown but the inside is not done, tent it with a large piece of foil to keep the top from burning.
  • You can bake this recipe in two 8”x8” baking pans. The baking time will need to be shortened, check around 25 – 30 minutes for doneness and continue baking as needed.
  • This recipe will make at least 24 servings and possibly more if you cut them smaller.
  • Refer to the post for more troubleshooting and substitution tips.

Nutrition

Serving: 83g, Calories: 243kcal

Nutrition information is automatically calculated, so should only be used as an approximation.

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Trang Doan

I'm a self-taught baker. I love sharing everyday baking recipes inspired by tropical ingredients and Asian flavors. All my recipes are tested and perfected in my home kitchen to ensure you can make them successfully in yours!

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4.95 from 17 votes

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86 Comments

  1. Kristina Pavao says:

    5 stars
    Thank you for this recipe! Made a half batch in a square cake pan in our toaster oven. Just enough for our family and froze the evaporated & coconut milks for next time. Quick, easy and so good!

    1. Trang says:

      Thanks for trying Kristina! I’m glad you guys enjoyed it 🙂

    2. Lisa says:

      Hello – do you think I can add ube to this or does the melted butter take over too much of the flavor?

      1. Trang Doan says:

        Hi Lisa, if you want to add ube you might want to substitute some of the evaporated milk for it. Though I don’t know how much because I haven’t made the substitution before, you could try to experiment. Ube and coconut milk should go together real nicely.

  2. JenLo says:

    5 stars
    Super easy one bowl recipe. Our family loves it!

  3. Eri says:

    5 stars
    Hello! I’ve made this recipe a few times and only now again have I been able to make it a little close to your photos :’) My ratio of ingredients was off last time so my cake rose too much and was all dry and crumbly. Still tasted decent though.

    I was wondering, how did you get the top to brown so beautifully? My latest cake is quite pale with brown spots… My toothpick comes out with crumbs attached at around 48 minutes.

    Thank you!

    1. Trang says:

      Hi Eri, I wonder if your oven just have uneven temperature. I don’t do anything special to brown the top, try to rotate your pan halfway through baking and see if it helps.

  4. Michelle says:

    Can this be frozen after baking prior to serving? Can’t wait to try this.

    1. Trang says:

      Hey Michelle, I’ve never frozen these before, but they can be kept refrigerated for a week. However, you’ll need to warm them up before serving to get the soft chewiness back. Usually, I wrap a piece in plastic and microwave for about 10-15 seconds. If you freeze them, you will need to thaw them and warm them back up before serving. They are best the day they are baked though. Hope you’ll enjoy them, let me know if you have any other questions.

  5. Serena says:

    4 stars
    I’m not sure what I was expecting when I started making this recipe (I have never had “traditional” Mochi) so I was a little weirded out by the result. I have never had anything like this. Ever. There is nothing you can compare them to (except regular Mochi I guess). THE RECIPE TURNED OUT EXACTLY AS IT WAS SUPPOSED TO, very simple! (I altered it ever so slightly by accidentally using salted butter and I adding a little confectioners sugar to compensate) They are wonderfully flavourful and not overly sweet. They are very dense and filling but quite good. My family wasn’t big on the texture but agreed that they taste good. My gluten-free best friend LOVES them so I will be making again 🙂 thank you for sharing your recipe!

    1. Trang says:

      Thanks for trying Serena!

  6. Sori says:

    5 stars
    The cake came out great. Everyone loved it. Thanks for the recipe.

  7. Bethany says:

    5 stars
    I’ve tried many versions of this dessert, and this is my favorite! I prefer it without the shredded coconut so I omitted that ingredient, and 55 minutes was spot on for my oven! I lined the baking dish with parchment paper which made it super easy to remove from the pan after cooling. Thanks so much for a great recipe!

    1. Trang says:

      Thanks Bethany, glad you enjoy this recipe! One of our favorites as well 🙂

  8. Tiffany Green says:

    5 stars
    So easy to make and was delicious! My entire family really loves it. We made 3 pans this week for Lunar New Year

    1. Trang says:

      I’m glad to hear your family loves this. Such a great treat for Lunar New Year celebration!

  9. Dennis says:

    Hey Trang,
    Tried this recipe. It was so good, the two 8×8 baking pan I used was empty at the end of a family gathering. Thank you WildWildWhisk.

    1. Trang says:

      Woohoo! Thank you Dennis, I”m so happy to hear the family loved it 🙂

    2. Grace Abellera says:

      How long did you cook in a 8 X8

      1. Trang says:

        Grace, if you use 8×8 pan, make sure to use 2 pans since the batter would be too much for just 1 pan. I’m going to guess about 30 – 40 minutes, but make sure to check with a toothpick.

  10. Nira Wong says:

    So excited to make this. I only had coconut milk and decrease the sugar by 1/2 cup. Checking at 50 mins. It was a nice golden top. It appeared to be ready after testing and the tester cameout clean. After cooling completely I cut into it and the bottom 2/3 didn’t appear cooked completely like the pictures on your website. Any suggestions? It tastes fine but a little mushy.

    1. Trang says:

      Hey Nira, if it browns too quickly on top before cooking through, you could tent it with a large piece of foil and let it continue baking. You should be able to tell with the toothpick test if it’s cooked, was yours completely clean?

      1. Nira says:

        Thank you for your response and suggestions. The toothpick did come out clean from several spots. That’s why I was surprised to find the bottom 2/3 darker and denser. It tastes ok could it be cooked?

        1. Trang says:

          If you’re worried about it being uncooked, I would pop a couple of pieces back into the oven and see if it helps if you bake it again. My very first batch when making these were like that, golden brown on top and still a little mushy at the bottom, but still tasty. It could also depend on the oven too, if you have hot spots maybe that’s why it browns faster. I’d definitely bake it longer next time and just tent it with foil to ensure you get the springy chewy texture throughout.

          You said the bottom 2/3 is darker and denser? Or mushy? Do you have a photo?

          1. Nira says:

            Thanks for all your tips. Will try again because it was tasty. I will see if I can figure out how to send you a picture.

          2. Trang says:

            You can email it to me 🙂