Hawaiian Butter Mochi

Pro tips

• Melt butter and mix wet ingredients (coconut milk, eggs, vanilla) thoroughly before combining with dry ingredients to avoid lumps in the batter.
• Bake until the edges are set but the center still jiggles slightly when the pan is gently shaken; residual heat will firm it up as it cools, creating the signature chewy crumb.
• Use full-fat coconut milk; lite versions will make the mochi drier and less rich.
• Cool completely before cutting for cleaner, less crumbly pieces.

Substitutions

• Light brown sugar → granulated sugar (slightly less depth of molasses flavor)
• Unsalted butter → salted butter (reduce added salt to ¼ tsp)

Storage & make-ahead

Store in an airtight container at room temperature for 2 days or refrigerate up to 5 days; freeze wrapped pieces up to 1 month.

What is mochiko flour and can I substitute it?

Mochiko is glutinous rice flour made from short-grain sweet rice. Tapioca starch or cornstarch can approximate the texture, but mochiko delivers the authentic chewy crumb; substitutes will yield a different result.

Why is my mochi cake gummy instead of chewy?

Overbaking or too much liquid creates a gummy texture. Bake until a toothpick inserted in the center comes out with a few moist crumbs, not wet batter. The cake will continue to set as it cools.

Can I make this ahead or freeze it?

Yes. Store in an airtight container at room temperature for 2 days or refrigerate up to 5 days. Wrap individual pieces and freeze up to 1 month; thaw at room temperature or reheat gently in the oven.

What does full-fat coconut milk add to this recipe?

Full-fat coconut milk provides richness and subtle coconut flavor that defines the dish. Lite or reduced-fat versions will result in a drier, less flavorful mochi.

Can I double this recipe?

Yes. Double all ingredients and bake in a 9x13-inch pan. Increase baking time by 5–10 minutes and check doneness with a toothpick.