Banana Mochi Squares
Soft, chewy, and naturally sweet, these easy banana mochi squares are the perfect way to use up overripe bananas with no fancy equipment needed.
- Microwaving the bananas gelatinizes some starches early and removes excess water.
- Glutinous rice flour provides the essential amylopectin starch for maximum chewiness.
- Baking in a covered water bath keeps the edges from drying out and turning into leather.
Last Tuesday, I stared down a pair of black-spotted bananas on my counter that were far past their prime, even for banana bread. I was tired of the usual baking routine, so instead of making my go-to Chai Spice Cake, I decided to try something completely different.
I beat the glutinous rice flour into the wet banana mash until my forearms actually ached. I kept going until the batter fell from the spatula in a thick, glossy ribbon.
Most home cooks fail at mochi because they don't realize that starch gelatinization requires precise moisture control. If your bananas are too watery, the starch network collapses, leaving you with a soggy, sad puddle instead of a bouncy treat.
Trust me on this one: the simple fix is to microwave the mashed bananas first to cook off excess water. This concentrates the natural sugars and ensures the perfect ratio of amylose and amylopectin for that signature chew. It is hands down the easiest way to guarantee success without pulling your hair out.
You probably already have everything you need in your pantry right now.
Banana Mochi Squares
Ingredients
- 2 medium overripe bananas (about 200g mashed)
- 200g glutinous rice flour
- 100g granulated sugar
- 180ml unsweetened coconut milk
- 1/2 tsp Diamond Crystal kosher salt
- Potato starch or cornstarch for dusting
Directions
- Preheat your oven to 350°F (175°C) and grease an 8x8-inch baking pan.
- Mash the bananas in a microwave-safe bowl and microwave on high for 90 seconds to reduce moisture.
- Whisk the glutinous rice flour, sugar, and Diamond Crystal kosher salt together in a large bowl.
- Pour in the coconut milk and warm mashed bananas, whisking vigorously until a smooth, pourable batter forms.
- Pour the batter into the prepared pan, cover tightly with foil, and bake for 40-45 minutes until set.
- Let cool completely, dust with potato starch, and slice into neat squares using a plastic knife.
Notes
- Brand Recommendation: I highly recommend using Mochiko brand glutinous rice flour; substituting regular rice flour will result in a gritty, crumbly disaster.
- Science-Backed Rationale: The high amylopectin content in glutinous rice flour is what creates the sticky, elastic protein-like matrix, even though it is entirely gluten-free.
- Preemptive Warning: Don't skip covering the pan with foil during baking; otherwise, the top will dry out into a tough, leathery skin before the center cooks through.
- Storage Behavior: After a day in the fridge, the mochi will lose its bounce and harden due to starch retrogradation, but a quick 10-second zap in the microwave brings it right back to life.
Serving Suggestions
These squares are absolutely perfect on their own, but you can easily turn them into a stunning dessert platter with a few simple additions.
- Dust with toasted coconut flakes for a tropical twist.
- Serve alongside a scoop of black sesame or green tea ice cream.
- Drizzle with a quick caramel sauce, similar to the topping on our Banana Foster Chex Mix.
- Pair with a cup of hot matcha or a refreshing Iced English Tea Latte.
- Arrange them neatly on a wooden board next to fresh mango slices.
Storage and Reheating
Keep it at room temperature in an airtight container.
If you must store them longer, wrap each individual square tightly in plastic wrap and freeze them. This locks the gelatinized starches in place before they can recrystallize and harden.
When you are ready to eat, simply thaw a square at room temperature for an hour, or pop it directly into the microwave for a quick fifteen-second zap on medium power. This gentle heat excites the starch molecules, instantly restoring that fresh-baked, melt-in-your-mouth texture we love.
Ingredient Substitutes
If you need to swap things out, here are the tested alternatives that won't ruin your batch.
- Glutinous Rice Flour: If you can't find Mochiko, sweet rice flour works, but do not use regular white or brown rice flour.
- Coconut Milk: You can swap this with whole milk or oat milk, though you will lose that rich, tropical undertone.
- Sugar: Light brown sugar can be used instead of granulated sugar to add a deeper, caramel-like note.
- Bananas: If you want a different flavor profile, you can try using mango puree, similar to our Mango Mochi recipe.
I hope you give this one a try the next time your fruit bowl looks a little sad. It is a delightful little baking project that feels like magic when it all comes together. Let me know how yours turns out!
Susan Rosie
I've spent over 12 years perfecting recipes so you can cook with confidence. Every dish on Storied Skillet is tested multiple times – because your dinner matters. I believe in simple ingredients, clear instructions, and big flavors.
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