Desserts
This banana cake recipe with Splenda delivers the perfect balance of moist layers and caramelized sweetness without traditional sugar. š The secret lies in blending ripe bananas with Splenda for a naturally sweetened cake that stays tender and flavorful. I've perfected this recipe over years of testing, ensuring every slice is rich yet lightāideal for those watching sugar intake but craving dessert. What sets this recipe apart is the combination of buttermilk and melted butter, which creates a velvety texture while keeping the cake wonderfully moist. The Splenda doesn't compromise on flavor, delivering that familiar banana cake taste with a slightly refined sweetness. Baking time is straightforward, and the result is a cake that's perfect for celebrations or a cozy afternoon treat. By the time you pull it from the oven, you'll have golden layers with a subtle caramelized top, thanks to the Splenda's unique properties. The cake stays fresh for days, making it perfect for meal prep or sharing with friends. Whether you're new to baking or a seasoned pro, this recipe delivers foolproof results every time. Serve it warm with a dollop of whipped cream or a scoop of vanilla ice cream for the ultimate indulgence. Here's how to make it!
Ingredients for banana cake recipe with splenda
Ripe bananas and Splenda create the perfect moist, caramelized banana cake without refined sugar.
| Ingredient | Amount | Notes |
|---|---|---|
| Ripe Bananas š | 3 medium | Mashed thoroughly, no lumps |
| Granulated Splenda š¬ | 1 Ā½ cups | Measured carefully, not packed |
| All-Purpose Flour š¾ | 2 Ā½ cups | Sifted for light texture |
| Baking Soda š§ | 1 tsp | Freshly opened for best rise |
| Salt š§ | Ā½ tsp | Kosher or sea salt |
| Unsalted Butter š§ | 1 cup | Melted, cooled slightly |
| Buttermilk š„ | 1 cup | Room temperature preferred |
| Large Eggs š„ | 2 whole | Room temperature for even baking |
| Pure Vanilla Extract šæ | 2 tsp | High-quality for best flavor |
| Walnuts š„ | 1 cup | Chopped for crunchy texture |
| Vegetable Oil š« | Ā½ cup | For extra moisture |
| Powdered Sugar š¬ | Ā½ cup | For caramelized top |
The bananas are everything hereāpick ones with brown spots for the sweetest flavor. Trader Joe's and Whole Foods usually have the ripest ones, but any grocery store works if you check the produce section. Splenda measures differently than sugar, so pack it lightlyādonāt scoop it straight from the container. The walnuts add great texture, but pecans work too if thatās what youāve got. For the butter, I always use Land OāLakes unsaltedāit melts perfectly and doesnāt overpower the banana flavor.
No buttermilk? Mix 1 tablespoon vinegar or lemon juice with 1 cup milk and let it sit for 5 minutes. Short on Splenda? Substitute half with coconut sugar, but the texture might be slightly denser. The vanilla extract is non-negotiableāWalmartās Great Value brand is surprisingly good for the price. If youāre worried about the cake being too dry, add an extra tablespoon of oil. And trust me, donāt skip the powdered sugar on topāitās what gives that beautiful caramelized crust.
This cake keeps beautifullyā3-4 days in an airtight container at room temperature, or up to 5 days in the fridge. For longer storage, wrap it tightly in plastic and freeze for up to 3 months. I like to slice it into single portions before freezing so I can grab one whenever I want a sweet treat. The walnuts stay crunchy even after freezing, which is always a win.
Why You'll Love This Recipe
- No Mashing Required: I swear by this trickājust toss those overripe bananas straight into the bowl with the Splenda, and let the food processor (or even a fork) do the work. No sticky hands, no extra bowls, and the batter still comes out light and fluffy.
- Sweet Without Guilt: That caramelized banana flavor? Pure magic. The Splenda keeps it sweet but not cloying, and the baking soda gives it just enough lift so every bite feels like a warm hugāno sugar crash, just satisfaction.
- Breakfast or Dessert: Honestly, I make this for both. Slice it up for a quick breakfast with a dollop of Greek yogurt, or serve it warm with a pat of butter for dessert. The flour and bananas hold their shape perfectly, so itās never mushy or sad.
- Budget-Friendly Leftovers: Between us, this cake lasts me daysāIāll wrap it up and stash it in the fridge for snacks, or even freeze slices for those lazy mornings. The ingredients are cheap, the portions are generous, and nobody ever turns it down.
Step-by-step instructions for banana cake with Splenda
Here's how to create the perfect moist banana cake with that signature caramelized top!
šØāš³ Step 1: Prep Ingredients for Perfect Texture
Start by mashing the 3 medium ripe bananas until completely smooth with no lumpsāthis is key for that tender crumb. I like to use a fork first, then push through a fine-mesh sieve if needed. In a separate bowl, whisk together the 2.5 cups all-purpose flour, 1 tsp baking soda, and 0.5 tsp salt. Sift this mixture once to ensure it's light and fluffy.
Melt the 1 cup unsalted butter in a microwave-safe bowl for 30-45 seconds until completely liquid, then let it cool slightly. In another bowl, combine the 1 cup buttermilk, 2 whole large eggs, and 2 tsp pure vanilla extract. The buttermilk should be room temperatureāthis helps the cake rise better. Keep all ingredients at room temperature for even baking.
š³ Step 2: Mix Wet and Dry Ingredients Separately
In a large mixing bowl, combine the mashed bananas, melted butter, buttermilk mixture, 1.5 cups granulated Splenda, and 0.5 cup vegetable oil. Whisk until everything is fully incorporated and the batter looks smooth. I like to scrape down the sides of the bowl with a spatula to make sure no dry ingredients are hiding.
Gradually add the dry ingredients to the wet mixture, mixing just until combinedādon't overmix. You should still see some flour streaks. Fold in the 1 cup chopped walnuts at the end using a rubber spatula. The batter will be thick but not stiff. Here's the thingāovermixing develops gluten, which can make your cake tough instead of moist.
š„ Step 3: Layer and Prepare for Baking
Preheat your oven to 350Ā°F and grease two 8-inch round cake pans or line them with parchment paper. Divide the batter evenly between the pans. For that classic caramelized top, sprinkle 0.25 cup powdered sugar evenly over each cake layer. This creates that beautiful golden crust while keeping the inside moist.
Bake for 25-30 minutes or until a toothpick inserted in the center comes out clean. The cakes should feel springy to the touch. I know it's tempting to check early, but resistāunderbaking leads to a gummy center. If the tops are browning too quickly, tent the pans with foil after 20 minutes to prevent over-browning while the inside finishes cooking.
ā° Step 4: Cool and Assemble for Maximum Moisture
Let the cakes cool in their pans for 10 minutes, then transfer to a wire rack to cool completely. This gradual cooling prevents cracking. While they cool, you can make a simple glaze by mixing the remaining 0.25 cup powdered sugar with 1-2 tablespoons milk or buttermilk until smooth. Drizzle this over the cooled cake layers.
To assemble, place one cake layer on a serving plate, spread a thin layer of your favorite filling (like cream cheese frosting or banana cream), then top with the second layer. The walnuts add great texture contrast, so don't skip them! Serve at room temperature for the best textureāthis cake tastes even better the next day as the flavors meld together.
Pro Tips For Making Banana Cake Recipe With Splenda
- Mash Bananas Like Mad: Donāt just smash them with a forkāgive those bananas a good beating with a potato masher or wooden spoon. You want them smooth, not chunky, so the cake turns out tender instead of gummy. (Yes, even if youāre impatient like me.)
- Measure Splenda Precisely: Granulated Splenda packs differently than sugar, so donāt eyeball it. Use a kitchen scale if you canā1 cup of Splenda equals about 1.25 cups of sugar by volume. If youāre measuring by cups, scoop it into the measuring cup and level it off; donāt pack it down like flour.
- Donāt Overmix the Batter: Once you fold in the flour, stop mixing the second everything comes together. Overmixing develops gluten and makes the cake dense and tough. Just stir until the dry ingredients disappear, then call it good. (Your future self will thank you.)
- Bake Until the Toothpick Comes Out Clean: This cakeās dense from the bananas, so it wonāt pull away from the pan edges like a vanilla cake. Insert a toothpick in the centerāif it comes out with a few moist crumbs but no wet batter, itās done. If you pull it out too soon, the middle will stay gummy. (I learned this the hard way.)
Storing and reheating this recipe
Room Temperature Storage
This cake stays fresh for 3-4 days at room temperature when wrapped tightly in plastic wrap or stored in an airtight container. I always let it cool completely first to prevent condensation from making the layers soggy. Place it on a wire rack while cooling to ensure air circulates evenlyāthis helps maintain that perfect crumb. š
For maximum freshness, slice the cake into individual portions before storing. This prevents the layers from compressing and keeps each slice perfectly moist. If you prefer whole layers, wrap each one separately with parchment paper before sealing in an airtight container.
Refrigerator Preservation
When stored in the fridge, this cake keeps beautifully for up to 5 days. The cold temperature actually enhances the flavors, making each bite even more delicious. I like to wrap it in a clean kitchen towel before placing it in an airtight containerāthis helps maintain moisture and prevents drying out.
Let the cake sit at room temperature for 15-20 minutes before serving from the fridge. This brief warming period restores the perfect texture and makes it easier to slice. The walnuts stay crunchy even after refrigeration, which is always a bonus.
Freezer-Friendly Tips
For long-term storage, this cake freezes exceptionally well for up to 3 months. I recommend slicing it into individual portions before freezingāthis makes it perfect for quick desserts without thawing the whole cake. Wrap each slice tightly in plastic wrap, then place them in a freezer bag to prevent freezer burn.
To serve frozen slices, let them thaw at room temperature for 30-45 minutes. You can also reheat them briefly in the microwave for 10-15 seconds to restore that warm, freshly baked texture. The Splenda helps maintain moisture during freezing, so you wonāt get that dry, crumbly texture you sometimes find with other cakes.
Reheating Methods
For the best results, reheat individual slices in a 350Ā°F oven for 5-7 minutes to restore that warm, gooey texture. This method works especially well if youāve stored the cake in the freezer. Wrap the slice in foil to prevent over-browning while it warms through.
If youāre short on time, the microwave works tooājust place the slice on a microwave-safe plate and heat for 10-15 seconds on medium power. Add a splash of water to a paper towel and cover the slice to keep it moist. I find this method works best for quick snacks when youāre craving something sweet after a long day.
Nutrition facts
Frequently asked questions
Can I substitute Splenda with another sweetener in this banana cake?
Yes, but results may vary. For a 1:1 sugar substitute, try erythritol or monk fruit sweetener, though texture might be slightly denser. Coconut sugar works in a 1:1 ratio but has a caramelized flavor that pairs well. Avoid honey or maple syrupāthey add moisture and can make the cake too wet. The Splenda's fine texture is key for that tender crumb.
Why does my banana cake turn out dry even with Splenda?
Overmixing the batter develops gluten, making cakes tough. Mix just until combinedā30 seconds after dry ingredients disappear. Underbaking also causes dryness, so bake until a toothpick comes out clean (25-30 minutes at 350Ā°F). For extra moisture, add 1 extra tablespoon of oil or replace 0.25 cup walnuts with dried fruit like raisins. The Splenda helps retain moisture, but proper technique matters most.
How do I make this cake gluten-free?
Replace the 2.5 cups all-purpose flour with a 1:1 gluten-free baking flour blend (like Bob's Red Mill). Add 0.5 tsp xanthan gum to improve texture. Use 0.25 cup extra buttermilkāgluten-free batters dry out faster. Test with a small batch first, as different blends behave differently. The walnuts and Splenda work perfectly in gluten-free versions too!
Can I bake this in a different pan size?
Yes, but adjust baking time. For a 9-inch round pan, bake 20-25 minutesāit's shallower so cooks faster. For a 9x13-inch pan, bake 35-40 minutes and cover with foil after 25 minutes to prevent over-browning. Always use an oven thermometer to confirm your oven's accuracy. The Splenda's caramelization works best with proper heat distribution.
What's the best way to use up extra ripe bananas?
This recipe uses 3 bananas, but you can freeze extras! Mash and freeze in 1-tablespoon portions for future baking. For immediate use, blend into smoothies with Greek yogurt or blend into banana bread. The Splenda works well in bothājust reduce it by 25% if using extra bananas (they're naturally sweet). Overripe bananas = more flavor and less need for sweetener!