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Home » Recipes » Dessert » Brownies & Bars

Chocolate Mochi Brownies

By Trang Doan - Jun 2, 2022 (updated Jun 2, 2022) - This post may contain affiliate links.

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A hand holding a piece of half eaten chocolate mochi.

This Chocolate Mochi or Mochi Brownie is a chocolate variation of the very popular Hawaiian Butter Mochi, a buttery and chewy dessert made with glutinous rice flour. If you’re craving for some gluten free brownies, this is a great substitution!

A stack of mochi brownies.

Click here to Pin this recipe for later!

I first made this original version of Hawaiian Butter Mochi to bring a piece of Hawaii home with me after working on Oahu for 3 months back in 2018. It’s become one of the most popular recipes on the blog and so naturally, we must have a chocolate mochi variation. 

This chocolate mochi tastes just like a rich brownie with a chewy mochi texture. Hence, it’s also called mochi brownies. They’re also naturally gluten free since they’re made with sweet rice flour. So my gluten free friends, rejoice!

What is Mochi?

There are two types of Mochi: Hawaiian butter mochi and Japanese mochi. This chocolate butter mochi is more akin to Hawaiian butter mochi which is a type of cake made using Mochiko or sweet rice flour, or glutinous rice flour, instead of using all-purpose flour like a typical cake. 

Whereas Japanese mochi is typically made by steaming sweet rice, then pounding and shaping it into round sticky rice cakes. It can be served plain or with sweet red bean filling. It can also be made with sweet rice flour combined with sugar and water or milk, heated up until the mochi is formed.

A stack of 3 chocolate mochi with more around.

Ingredients and Substitutions 

  • Mochiko or sweet rice flour – this is a shorter grain rice and is very sticky when cooked. There is no substitution for this and you have to use the correct type of rice flour for this recipe to work. I always use Koda Farms Mochiko but there are other brands of sweet rice flour that I think will work in this recipe as well.
  • Baking powder – a small amount is used for leavening.
  • Cocoa powder – natural or Dutch-processed cocoa powder should both work but I prefer Dutch-processed for deeper chocolate flavor. Tip: to enhance chocolate flavor even further, add instant espresso powder.
  • Sugar – I used granulated sugar, but you can use brown sugar or raw sugar in the same amount.
  • Salt – a little bit of kosher salt is used to enhance flavor.
  • Butter – unsalted butter is used. Salted butter might make the final mochi brownies too salty but if you substitute salted butter, you can omit the salt called for separately.
  • Chocolate chip – I used dark chocolate chips. You can substitute semisweet or bittersweet chocolate. And they don’t have to be chocolate chips, you could use a chocolate bar or any type you like.
  • Vanilla extract – use pure vanilla extract for the best flavor. Vanilla will enhance the flavor of chocolate.
  • Eggs
  • Coconut milk – you must use unsweetened canned coconut milk and not coconut milk from the carton. Canned coconut milk has higher fat content which results in a richer chocolate mochi. Substitutions: half and half (half milk half heavy cream) sugar or coffee cream, you could use whole milk but the brownies will not be as rich. Note: I also tested coconut cream with this recipe, but found it too rich.

How to make Chocolate Mochi 

Collage of 3 photos: making chocolate mochi batter.
  1. Melt butter and chocolate chips together, allow to cool slightly, then beat together with eggs, vanilla and coconut milk. Tip: I melted the chocolate in hot butter and allowed it to cool slightly before mixing it in with the rest of the wet ingredients to avoid cooking the eggs. 
  2. Mix together the dry ingredients and add to the wet ingredients.
  3. Stir until completely smooth.
Collage of 2 photos: baking mochi brownies.
  1. Transfer batter to a buttered and lined baking pan.
  2. Bake at 350F for 25-30 minutes. Note: some readers have reported it took them longer to bake, so just make sure you bake until a toothpick inserted in the center comes out clean with just a few crumbs attached.

How to store Mochi Brownies

  • Room temperature: these will last 1-2 days at room temperature. Beyond that, it is best to refrigerate them so they don’t go moldy.
  • Refrigerator: they will last up to 2 weeks in the fridge.
  • Freezer: they will keep up to 3 months in the freezer. To freeze, wrap each piece well in plastic and/or foil and place them in a freezer bag. Thaw completely at room temperature before serving.

Refrigerated and frozen butter mochi will lose their bounciness once thawed. Reheat in the microwave for about 20 seconds to soften. Tip: wrap the piece of butter mochi in plastic or a damp paper towel to keep them from drying out.

Click here to Pin this recipe for later!

Taking a bite out of a piece of chocolate mochi.

More mochi recipes

  • Hawaiian Butter Mochi
  • Coconut Mochi
  • Matcha Green Tea Mochi
  • Guava Mochi

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A stack of mochi brownies.

Chocolate Mochi Brownies

This Chocolate Mochi or Mochi Brownie is a chocolate variation of the very popular Hawaiian Butter Mochi, a buttery and chewy dessert made with glutinous rice flour. If you’re craving for some gluten free brownies, this is a great substitution!
4.86 from 7 votes
Print Pin Rate
Course: Dessert
Cuisine: American, Hawaiian
Prep Time: 15 minutes
Cook Time: 30 minutes
Total Time: 45 minutes
Servings: 16 pieces
Calories: 177kcal
Author: Trang

Ingredients

  • 1 ¼ cup Mochiko (190 g)
  • 1 rounded teaspoon baking powder
  • ¼ cup cocoa powder
  • ¾ cup granulated sugar
  • A big pinch of kosher salt
  • 2 oz unsalted butter – melted
  • ½ cup dark chocolate chip (~ 3 oz)
  • 1 teaspoon pure vanilla extract
  • 2 large eggs
  • 1 cup unsweetened canned coconut milk
  • Extra butter for pan

Instructions

  • Preheat oven to 350°F.
  • Brush the bottom and sides of an 8”x8” square baking pan with melted butter, line the pan with a long strip of parchment paper and let the excess hang over the side. Brush the parchment paper with butter as well and add another long strip of parchment paper crosswise. Brush with melted butter again and set aside.
  • In a medium mixing bowl, add mochiko, baking powder, cocoa powder, sugar and salt and stir with a whisk until evenly distributed. Set aside.
  • Melt butter in a small bowl in the microwave for 40-45 seconds. Add chocolate chip to the hot butter and stir to melt the chocolate completely.
  • In a large mixing bow, add vanilla, eggs, coconut milk and beat with a whisk until smooth. Add the melted butter and chocolate mixture and beat until combined.
  • Stir in the dry ingredients and mix until completely smooth.
  • Pour the mixture into the prepared pan and bake for 25-30 minutes until a toothpick inserted in the middle comes out mostly clean with just a few crumbs attached. Note: some readers have reported it took them longer to bake (60 minutes), so just make sure you bake until a toothpick inserted in the center comes out clean with just a few crumbs attached.
  • Allow to cool completely before cutting and serving.

Notes

  • Refrigerate left over. To reheat, wrap a piece of mochi in a damp paper towel and microwave for 10-15 seconds depending on the size you cut them.
  • Either natural or dutch processed cocoa powder can be used in this recipe.
  • Use canned coconut milk, and not the one in the carton. Canned coconut milk has higher fat content and will result in tastier baked good.

Nutrition

Serving: 52g | Calories: 177kcal
DID YOU MAKE THIS RECIPE?I love hearing how it went! Leave a comment below and rate it. Mention @WildWildWhisk or tag #WildWildWhisk on Instagram.

This post may contain affiliate links. For more details on how we utilize affiliates, ads, and sponsored contents, see our full disclosure policy. Thank you for your continue support, which enables us to keep bringing you delicious recipes, at no extra cost to you.

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Reader Interactions

Comments

  1. Lea

    June 03, 2022 at 9:03 am

    Anyone tried egg substitutes with this recipe? Egg and gluten allergy, but was hoping someone might have tried before I do.

    Reply
    • Trang Doan

      June 03, 2022 at 1:40 pm

      You could try flax egg, 1 egg = 1 tbsp flax seed meal + 2.5 tbsp water.

      Reply
  2. Anne J

    March 16, 2022 at 7:22 am

    This is surprisingly delicious and easy to make. I made mine sugar free using splenda brown sugar.

    Reply
  3. Paula

    April 04, 2021 at 2:48 pm

    I had to bake these for 60 minutes for the mochi cake to set.

    Reply
  4. Jai

    September 23, 2020 at 7:18 pm

    5 stars
    These were so different from anything I’ve tried before! They definitely have a chew that is reminiscent of mochi, but the flavor is what really reminds me of it! They’re not super chocolatey, but they’re really easy to make and delicious.

    Reply
  5. Joe

    August 06, 2020 at 5:40 am

    I love how easy they are to make, they are wonderfully scrumptious. I subbed it out for erithyol and it was divine.

    Reply
    • Trang

      August 06, 2020 at 6:47 am

      Glad to hear the sweetener substitution works well, Joe!

      Reply
  6. Iris

    July 08, 2020 at 12:17 am

    4 stars
    Not sure if any of my tweaks messed up the final result fundamentally (I used 1 cup whole milk + 1 tbsp flour instead of coconut cream because I just really couldn’t find cream anywhere, slightly less sugar, and sprinkled some chocolate chips on top of the batter), but it turned out tasty! Intense chocolate flavour, and the texture was more mochi than cake (it turned out like a square chocolate mochi actually). Used an 8×8″ pan and came out a little flatter than in the picture, but the crackly top was great.

    Very important to liberally grease the parchment paper!! I forgot to grease it and had to scrape the brownie off the parchment paper with a knife after it cooled.

    Reply
  7. Mwff

    July 07, 2020 at 6:48 pm

    5 stars
    Easy and delicious,

    Reply
    • Emily

      April 19, 2021 at 5:56 am

      Asome recipe!
      Can I replace coconut milk by whole fat milk?

      Reply
      • Trang Doan

        April 19, 2021 at 6:03 am

        I would recommend half and half or whipping cream.

        Reply
  8. Matt

    May 29, 2020 at 6:57 am

    This is excellent – great recipe, and great texture that keeps you coming back for more. To clarify, however, this is not mochi, which is made from 100 percent glutinous rice and is much chewier. It might be more accurate to call this Mochi Cake. While you can’t expect anything close to the chewiness of mochi, you do get a slight chewiness from the glutinous rice flour that is very compelling and makes it hard to eat only one. Will be a repeat recipe for me.

    Reply
    • Trang

      May 29, 2020 at 2:10 pm

      Hi Matt, you’re absolutely right, this not pure mochi, as in Japanese mochi made by pounding steamed sweet rice. This is a chocolate version of the Hawaiian Butter Mochi. It definitely is mochi cake!

      Reply
  9. Diana

    May 23, 2020 at 10:45 pm

    5 stars
    Great texture and super chocolatey. Loved it. Saving recipe to make again.

    Reply
  10. Mod

    May 18, 2020 at 8:11 am

    Hi! I have been looking to try baking with mochiko, yours seems to tick all the boxes: has both cacao powder and melted chocolate, and has relatively less sugar. 🙂
    Im wondering 2 things please:
    – can cream or milk be used instead of coconut milk?
    – can i play with the type of sugar? personally i am a fan of mixing in some brown sugar – i love the depth it adds to the baked goods

    Thank you 🙂

    Reply
    • Trang

      May 19, 2020 at 12:20 pm

      Hi Mod:
      1. You can use half and half (half cream half milk) to replace the coconut milk. This will mimic the fat content of the coconut milk. Cream alone would be too rich and milk alone would be too watery.
      2. Yes you can certainly mix in brown sugar!

      Reply
  11. Robin

    May 13, 2020 at 11:47 am

    5 stars
    I made these a couple days ago, thank you for the recipe! Since my oven runs hot, I set it to 325 and pulled them out right at 25 minutes (I also wanted a bit of a crispy edge so i omitted the parchment paper lining). They were fantastic! I’ll absolutely have to make them again.

    Reply
    • Trang

      May 13, 2020 at 12:04 pm

      Thanks for the feedback Robin!

      Reply
  12. Teresa

    April 18, 2020 at 2:26 am

    Hi there! Is it possible to use Shiratamako instead if Mochiko in this recipe? Thank you!

    Reply
    • Trang

      April 18, 2020 at 10:14 am

      Hi Teresa, I have never worked with Shiratamko before but reading about it I would say yes you should be able to use it as replacement, but it is not necessary. It seems that Shiratamako is more expensive and harder to find, but if you already have it at home, then you can certainly use it. Please let me know how it turns out.

      Reply
    • Teresa

      April 18, 2020 at 1:51 pm

      Thank you so much for replying!! I really appreciate it. I sifted the Shiratamako because it is chunkier. Although the chewiness was there, there were still tiny bits of it Shiratamako throughout, so my cake did not have the smooth surface like yours. Also, I only had coconut cream on hand, no coconut milk. I would not recommend using Shiratamako. I will definitely make this cake again. The recipe is a keeper, thank you for sharing it!!

      Reply
      • Trang

        April 18, 2020 at 3:20 pm

        Thank you Teresa! Good to know about the substitution result.

        Reply
  13. Sandy

    July 28, 2019 at 9:55 am

    Hi Trang. I was going to make original butter mochi but your chocolate recipe sounds perfect for my family. Could I just add the chocolate ingredients to the Hawaiian butter mochi recipe for a larger yield? Also, can this be frozen?

    Reply
    • Trang

      July 28, 2019 at 9:50 pm

      Hey Sandy, if you want a bigger batch, I suggest doubling the chocolate butter mochi instead because it calls for slightly different ingredients in a different ratio, ie. it doesn’t have evaporated milk, it calls for coconut milk instead of coconut cream, etc. If you want to mix in the coconut flakes at the end, you can, but I do not recommend just adding chocolate to the regular recipe.

      As for freezing it, I haven’t tried, but you should be able to. I would portion it into smaller pieces first, wrap well with plastic and freeze in a ziplock bag or airtight container. Thaw and microwave to warm it before eating the frozen ones.

      Reply
  14. Marissa

    April 02, 2019 at 2:42 pm

    5 stars
    These are delish! Thanks for this recipe.

    Reply
    • Trang

      April 03, 2019 at 6:29 am

      Thank you Marissa!

      Reply
  15. Jessica

    March 06, 2019 at 5:42 pm

    Hi Trang! I loooove mochi. I’m on Keto right now – do you think subbing with granulated erythritol would yield the same results?

    Reply
    • Trang

      March 06, 2019 at 6:19 pm

      Hey Jessica, I think it would work but it may not yield the exact same result. My aunt made the green tea coconut mochi with a sugar substitute and I think she said it’s still good but didn’t come out exactly the same as mine, maybe it burned faster? So I would watch it in the oven to see how it does during the last 10-15 minutes to make sure it’s not burning. Let me know how it comes out!

      Reply
  16. Carrie

    February 12, 2019 at 2:50 pm

    Only 1 cup of coconut milk? Or did you mean 1 can?

    Reply
    • Trang

      February 12, 2019 at 8:47 pm

      Hey Carrie, it’s 1 cup. Make sure to shake the can well before pouring out 1 cup. This is a much smaller batch than the classic Hawaiian Butter Mochi.

      Reply
  17. Marie

    February 07, 2019 at 11:13 pm

    5 stars
    These look absolutely divine. I keep meaning to try your original Mochi recipe but now I’m torn. I’ll need to go on the hunt for the right flour this weekend.

    Reply

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Hi! I’m Trang and welcome to my blog. This is where I share recipes from my kitchen. From cookies to cupcakes, to pies and ice cream, to treats for your fur babies, I hope you’ll find something you like and stay a while. Read More…

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