If you’re craving a tropical treat that’s chewy, sweet, and packed with flavor, the Hawaiian Coconut Butter Mochi Cake Recipe will quickly become your new favorite dessert. This delightful cake combines the unique texture of mochi made from sweet rice flour with the richness of butter and the creamy essence of coconut milk. Every bite bursts with that nostalgic island vibe, perfect for any gathering or whenever you want to enjoy a little taste of paradise at home.

Ingredients You’ll Need

The image shows a wooden board on a white marbled surface with various baking ingredients arranged neatly. From left to right, there is a bottle with whole vanilla beans, a small jar of roasted sesame seeds, a large clear container with white flour, a small pink container of baking powder, and a white bowl with red and green floral design holding two brown eggs. Behind the bowl, there is a carton of organic low-fat milk, a bottle of Bacardi rum, a tin of Thai Kitchen coconut milk, a yellow bag of Bob’s Red Mill sweet white rice flour, a clear bag of sweetened coconut flakes, and a stick of unsalted butter with blue and white packaging. The items are placed closely together, showing a variety of textures from powdery flour to smooth bottles and a textured coconut bag. photo taken with an iphone --ar 4:5 --v 7

These ingredients are wonderfully straightforward but essential for nailing the authentic taste and perfect texture of this cake. Each one plays a role, from the glue-like chewiness of sweet rice flour to the tropical flair of coconut and a hint of warmth from the rum.

Sweet rice flour (1 lb): This forms the chewy mochi base that gives the cake its signature texture.
White sugar (2 1/2 cups): Sweetens the cake beautifully while helping with browning.
Baking powder (1 tsp): Adds a gentle lift to keep the cake from becoming too dense.
Butter, melted (1/2 cup): Infuses richness and a tender crumb throughout the cake.
Rum (1 tbsp): Adds a subtle warmth and depth to the flavor; feel free to use a good-quality rum for best results.
Coconut milk plus milk (3 cups total): Delivers the creamy, tropical character that defines this mochi cake.
Eggs (5): Provide structure and moisture, binding everything perfectly.
Vanilla extract (1 tsp): Brings out the natural sweetness and rounds out the flavors.
Sweetened flaked coconut (1 cup): Offers bursts of chewy, coconutty bites throughout the cake.
Sesame seeds (for topping): A nutty garnish that adds just the right crunch and visual appeal.

How to Make Hawaiian Coconut Butter Mochi Cake Recipe

Step 1: Prepare Your Oven and Pan

Start by preheating your oven to 350 degrees Fahrenheit (175 degrees Celsius). Grease a 9″x13″ baking dish thoroughly to ensure your mochi cake doesn’t stick and can be served in perfect squares.

Step 2: Whisk Together the Wet Ingredients

In a medium bowl, whisk the eggs, vanilla extract, rum, coconut milk, and regular milk until everything is nicely combined and smooth. This mixture infuses moisture and tropical flavor into your cake.

Step 3: Combine Dry Ingredients

In a larger bowl, stir the sweet rice flour, sugar, and baking powder together. This helps ensure that the leavening is evenly distributed for even cooking and structure.

Step 4: Mix Wet and Dry Together

Pour the wet ingredients into the dry ones, stirring thoroughly to blend everything well. This step is crucial to avoid lumps and achieve that iconic, dense-but-chewy mochi texture.

Step 5: Incorporate Butter and Coconut Flakes

Stir in the melted butter and sweetened flaked coconut, folding them gently to distribute evenly. The butter adds richness while the coconut flakes provide texture and bursts of flavor throughout the cake.

Step 6: Bake Your Mochi Cake

Transfer the batter to your prepared baking dish and sprinkle sesame seeds on top for a lovely nutty accent and visual contrast. Bake in the preheated oven for about one hour. The edges will be lightly browned, and the center should be set but still springy to the touch.

Step 7: Cool and Cut

Once baked, let your mochi cake cool completely in the pan. Cooling helps the cake to firm up so you can cut it into clean, delicious squares ready for serving.

How to Serve Hawaiian Coconut Butter Mochi Cake Recipe

A square piece of dessert is shown on a white plate with a colorful blue, green, and white floral pattern. The dessert has two layers: the bottom layer is thick, pale yellow with a soft, smooth texture, and the top layer is thin and golden brown with small sesame seeds sprinkled all over, giving it a crunchy look. The edges of the dessert piece are clean and straight. The plate sits on a white marbled surface. photo taken with an iphone --ar 4:5 --v 7

Garnishes

A sprinkle of toasted sesame seeds on top adds nuttiness and crunch that perfectly complements the chewy cake. For an extra special touch, add a dollop of whipped cream or a few toasted coconut flakes on each serving. Fresh tropical fruits like mango or pineapple also pair beautifully.

Side Dishes

This cake shines as a standalone dessert but pairs beautifully with a scoop of vanilla ice cream or a drizzle of coconut caramel sauce for those who want to indulge a little more. Serve alongside lightly brewed jasmine or green tea to balance the sweetness.

Creative Ways to Present

For festive occasions, cut the mochi cake into bite-sized cubes and serve on skewers, alternating with fresh fruit. You can also layer it in individual cups with coconut pudding or fruit compote for an elegant trifling experience that still captures the essence of this Hawaiian treat.

Make Ahead and Storage

Storing Leftovers

Leftover Hawaiian Coconut Butter Mochi Cake Recipe can be stored in an airtight container at room temperature for up to two days or in the refrigerator for up to five days. Keeping it covered well ensures it stays moist and chewy without drying out.

Freezing

If you want to save it longer, wrap individual portions tightly in plastic wrap and place them in a freezer-safe container or zip-top bag. The cake freezes well for up to one month. Thaw in the refrigerator overnight before serving.

Reheating

To enjoy the cake warm, reheat slices in the microwave for 15-20 seconds or briefly in a toaster oven until just heated through. Warming enhances the buttery coconut flavors and brings back that delightful, chewy texture.

FAQs

What makes this mochi cake different from regular cakes?

This cake uses sweet rice flour instead of wheat flour, giving it a uniquely chewy, sticky texture that is distinctly different from the traditional fluffy crumb of wheat-based cakes.

Can I make this recipe dairy-free?

Yes! You can substitute the butter with vegan butter or coconut oil to keep the rich flavor and moisture while making it dairy-free.

Is this mochi cake gluten-free?

Absolutely. Since it’s made with sweet rice flour and does not contain any wheat ingredients, this mochi cake is naturally gluten-free, perfect for those with gluten sensitivities.

Why is rum used in this recipe?

The rum adds subtle depth and enhances the tropical flavors, giving an authentic island-inspired taste. If you prefer, you can omit it or replace it with a bit of vanilla extract.

Can I use unsweetened coconut flakes instead of sweetened?

You can, but sweetened coconut flakes provide a nice contrast and extra sweetness that balances the mochi’s texture and flavor. If using unsweetened, consider slightly increasing the sugar to compensate.

Final Thoughts

The Hawaiian Coconut Butter Mochi Cake Recipe is a total knockout in the dessert department, offering a taste of the islands that’s chewy, buttery, and incredibly satisfying. Whether you’re new to mochi or a longtime fan, this recipe will bring a little aloha spirit right into your kitchen. Go ahead, give it a try, and get ready to fall in love with every bite!