Hawaiian Butter Mochi

Featured in Irresistible Desserts & Treats.

Hawaiian Butter Mochi is a cherished island favorite, combining rich butter, coconut milk, and chewy mochiko flour. You'll get 20 golden squares of sweet goodness topped with coconut. It's easy to make—mix the ingredients, bake, and wait for the top to turn golden. While baking and cooling take some time, the prep is quick and simple. Perfect for everyone, from first-timers to seasoned bakers.
Un'immagine di una donna con i capelli raccolti in una borsa.
Updated on Mon, 24 Mar 2025 23:18:21 GMT
Three stacked cake squares. Pin it
Three stacked cake squares. | kyliecook.com

This beloved Hawaiian sweet treat turns basic ingredients into a deliciously chewy, coconut-infused delight that perfectly combines sweetness and texture. Every mouthful delivers soft mochi wrapped in an irresistible crispy, golden outer layer.

I whipped this up for my neighbor's Hawaiian-themed get-together last week, and folks couldn't believe how the coconut exterior created such a wonderful contrast with the chewy inside. Even the mochi first-timers kept coming back for more.

Ideal Components Selection

  • Mochiko (Sweet Rice Flour): 1 box (16 ounces/454g), Gives that distinctive chew and works as the main base
  • Unsalted Butter: 1 cup (226g), melted and cooled, Adds richness and helps form those tasty crisp edges
  • Granulated Sugar: 2 cups (400g), Works with the coconut for just the right sweetness
  • Whole Milk: 1 cup (240ml), Brings creaminess and helps make that custard-like bite
  • Large Eggs: 4, room temperature, Holds everything together and builds structure
  • Unsweetened Coconut Milk: 1 can (13.5 ounces/400ml), Brings that real island taste and smooth texture
  • Baking Powder: 2 teaspoons, Provides subtle lift without making it too fluffy
  • Pure Vanilla Extract: 1 tablespoon, Makes all other flavors pop
  • Kosher Salt: 1 teaspoon, Cuts the sweetness and boosts the coconut flavor
  • Unsweetened Shredded Coconut: 1 cup (85g), Creates that wonderful crust magic
  • Flaky Sea Salt: 1/2 teaspoon (optional), Brings elegance and sharpens flavor differences

Making Your Mochi

Setup:
Warm your oven to 350°F (175°C). Butter a 9x13-inch metal baking dish thoroughly, making sure to cover all spots.
Mix Dry Stuff:
Combine mochiko flour, sugar, baking powder, and kosher salt in a big bowl until fully mixed with no clumps.
Mix Wet Stuff:
In another bowl, beat eggs well. Add milk and vanilla, mixing until everything looks smooth.
Combine Everything:
Pour wet stuff into dry stuff, stirring well with a wooden spoon. You can mix hard since mochiko doesn't have gluten.
Finish Up:
Add melted butter and coconut milk to your mixture. Stir until you get a smooth, pourable batter. Pour into your buttered pan, then tap it firmly on the counter to get air bubbles out. Sprinkle coconut evenly on top, then add a light sprinkle of flaky salt if you want.
A plate of cake with a fork in it. Pin it
A plate of cake with a fork in it. | kyliecook.com

The corner pieces are treasured in my family because they have that extra chewy edge that works so well with the soft middle. I've started cutting those pieces bigger to stop the friendly arguments over who gets them.

Nailing The Perfect Texture

Watch your baking time carefully for best results. The top should turn golden brown while the middle still jiggles a bit. When you see a slight wobble after gently shaking it, it's ready to come out.

Letting Tastes Develop

Let your mochi cool fully on a wire rack for about an hour before cutting. This waiting time lets the texture set up right and makes it way easier to cut.

Smart Prep Advice

Getting all your stuff ready before you start really helps the whole process. Having everything measured out means you'll mix everything together without any hiccups.

Ways To Enjoy It

Cut your butter mochi into big squares before serving. While many folks eat it plain, I really like adding fresh tropical fruit when I'm serving it at casual parties.

Custom Touches

Try playing around with different flavors like almond or coconut extract to make it your own while keeping that classic chewiness everyone loves.

Keeping It Fresh

Store your mochi in a sealed container at room temp for up to three days. The texture will change a bit but will still stay wonderfully chewy.

Three pieces of cake on a plate. Pin it
Three pieces of cake on a plate. | kyliecook.com

After making tons of butter mochi batches over my baking years, this version stands out as my biggest success. I love how it brings people together and creates moments of pure happiness when they take that first perfectly chewy bite. Whether you've never tried Hawaiian treats or you're already a fan, this butter mochi will give you the true taste of aloha in every piece.

Frequently Asked Questions

→ What exactly is mochiko flour and where do I get it?
Mochiko flour is glutinous rice flour, often called sweet rice flour. Look for it in Asian supermarkets or the international aisle of larger grocery stores.
→ Why is a plastic knife best for cutting mochi?
The plastic knife stops the sticky mochi from clinging, making slicing much smoother.
→ Can I make a dairy-free version of this treat?
Yes! Swap the milk for extra coconut milk and use coconut oil instead of butter.
→ What’s the best way to store butter mochi?
Keep it in a sealed container at room temp for 3 days, or chill it in the fridge for up to a week.
→ Why does mochi sometimes crack on top?
A few cracks are normal. To reduce cracking, ensure the oven stays at a steady temperature and let the mochi cool slowly.

Butter Mochi Hawaii

A chewy, buttery Hawaiian treat blending mochiko flour and rich coconut milk for an unforgettable dessert.

Prep Time
20 Minutes
Cook Time
70 Minutes
Total Time
90 Minutes
By: Kylie

Category: Sweet Endings

Difficulty: Intermediate

Cuisine: Hawaiian

Yield: 20 Servings (20 pieces)

Dietary: Vegetarian, Gluten-Free

Ingredients

→ Base Ingredients

01 2 cups of white sugar, finely granulated
02 1/2 teaspoon of coarse kosher salt
03 1 pound of mochiko (sweet rice flour)
04 2 teaspoons of leavening agent like baking powder

→ Wet Ingredients

05 2 cups of milk (any type works)
06 1 stick of melted unsalted butter (8 tablespoons), plus extra for the pan
07 2 teaspoons of pure vanilla
08 4 eggs, large in size
09 1 unsweetened coconut milk can (13.5 ounces)

→ Topping

10 Flaky salt to sprinkle on top, optional
11 1/2 cup of coconut shreds, unsweetened

Instructions

Step 01

Preheat the oven to 350°F and move a rack to the center slot. Spread butter or oil on a 9x13-inch pan and melt down the stick of butter.

Step 02

In a big mixing bowl, stir together mochiko, sugar, salt, and baking powder using a whisk.

Step 03

Take a medium-sized bowl and whisk together the eggs, milk, and vanilla until smooth.

Step 04

Combine wet with the dry components by stirring them together with a wooden spoon. Then mix in the melted butter and coconut milk to make it smooth and creamy.

Step 05

Transfer the mixture to the greased baking dish. Gently bang the dish on the counter to pop any trapped air bubbles.

Step 06

Scatter shredded coconut over the batter evenly. Sprinkle some flaky salt if you want, but be gentle so you don't mess up the batter.

Step 07

Bake in the oven for about 60-70 minutes, or until the surface turns golden and it feels firm in the middle.

Step 08

Let it rest on a cooling rack for roughly an hour. Cut it into 20 rectangles using a buttered plastic knife, so it doesn't stick.

Notes

  1. A plastic knife is less likely to stick when cutting.
  2. Sweet rice flour is also called mochiko or glutinous rice flour.
  3. If your knife sticks, add a little oil or butter to it.

Tools You'll Need

  • A 9x13-inch baking dish
  • Big bowl for mixing
  • Medium bowl for liquids
  • Whisk for blending
  • Wooden spoon for stirring
  • Cooling rack for resting
  • Plastic knife for clean cuts

Allergy Information

Please check ingredients for potential allergens and consult a health professional if in doubt.
  • Has milk and butter in it
  • Eggs are an ingredient
  • Includes coconut products