Desserts
This banana cake recipe with oil not butter delivers ultra-moist layers without butter—perfect for those who want rich, tender cake without dairy. The secret? Oil keeps the texture incredibly tender while allowing the natural sweetness of bananas to shine. I developed this version after years of testing substitutions, and it never disappoints. What makes this recipe special is its simplicity and reliability. You'll need just 5 basic ingredients plus a few pantry staples, and the process is straightforward—no fancy techniques required. The oil creates a velvety crumb that stays moist for days, making it ideal for meal prep or special occasions. By the time it emerges from the oven, you'll have a golden cake with perfectly domed layers and a subtle caramelized top. The texture is so tender it practically melts in your mouth, and the flavor is pure banana goodness without being overly sweet. It's the kind of cake that tastes homemade, even if you're not a baker. Serve it plain, with a dusting of powdered sugar, or topped with a simple glaze. The beauty of this recipe is its adaptability—it works for everyday cravings or impressive gatherings. Let's get baking!
Ingredients for banana cake recipe oil not butter
Five simple staples plus oil for that melt-in-your-mouth texture—no butter needed.
| Ingredient | Amount | Notes |
|---|---|---|
| Ripe Bananas 🍌 | 2 cups | Mashed, no liquid added |
| Vegetable Oil 🫒 | 1 cup | Light or canola preferred |
| Granulated Sugar 🍚 | 1 ½ cups | White or light brown |
| All-Purpose Flour 🌾 | 2 cups | Sifted, spooned and leveled |
| Baking Soda 🧂 | 1 tsp | Pure, not baking powder |
| Salt 🧂 | ½ tsp | Fine sea salt preferred |
| Vanilla Extract 🌿 | 1 tsp | Pure vanilla preferred |
| Unsweetened Applesauce 🍎 | ½ cup | For extra moisture |
| Powdered Sugar 🍚 | ¼ cup | For dusting (optional) |
The bananas are the star here—pick ones with brown spots for maximum sweetness. Costco or Trader Joe's usually have the ripest ones in bulk bins. Oil is non-negotiable for that ultra-moist crumb—light or canola oil stays neutral and keeps the cake tender. I always grab the Kirkland brand at Costco for the best price. The flour? King Arthur or Gold Medal are my go-tos—they bake evenly every time. Sift it before measuring to avoid dense layers.
No vegetable oil? Melted coconut oil works in a pinch (adds slight coconut flavor), or avocado oil for a neutral taste. Brown sugar instead of white? Use the same amount—it'll be denser but still delicious. Short on applesauce? Extra mashed banana or Greek yogurt (if you're okay with dairy) both work. The vanilla extract matters—imitation vanilla
This cake stays moist for 4-5 days in an airtight container at room temperature—perfect for meal prep. For longer storage, wrap tightly in plastic and refrigerate for up to 1 week3 months by wrapping them individually. The powdered sugar topping is optional but makes it feel special—just dust it on right after baking while the cake's still warm. Slice when completely cooled for clean cuts.
Why You'll Love This Recipe
- No Mash Needed: I swear by this trick—just toss those overripe bananas straight into the batter with the oil and sugar. No sticky mess, no peeling, and the texture comes out moist without a trace of grittiness. (Yes, even my toddler can help.)
- Oil’s Rich Secret: The vegetable oil keeps this cake tender and fudgy, unlike butter-based versions that can dry out. That subtle richness? It’s what makes the ripe banana flavor sing—like a hug for your taste buds.
- Breakfast or Dessert: Serve it warm with a drizzle of honey for a lazy morning treat, or slice it up for after-school snacks. Honestly, I’ve even packed it in lunches—it’s that reliable.
- Budget Magic: A single bunch of bananas and a can of oil stretch this recipe far, plus it freezes beautifully. My freezer’s always stocked with slices ready for quick grab-and-go moments. (And no one questions the leftovers.)
Step-by-step instructions for ultra moist banana cake
Here's how to make a banana cake that stays moist for days—no butter needed.
Mash the Bananas Properly
Start by mashing the 2 cups ripe bananas in a large bowl until completely smooth. I press them through a fork first to break them up, then use a potato masher to get rid of any lumps. The goal is a thick, smooth puree with no chunks—this ensures even moisture distribution in your cake. If you prefer, you can also use a food processor for extra smoothness, but don't add any liquid.
Here's the thing—ripe bananas should be soft enough to mash easily but not mushy. If they're too firm, let them sit at room temperature for 10-15 minutes first. The riper the bananas, the more natural sweetness and moisture they'll contribute to your cake. Don't skip this step; proper mashing makes all the difference in texture.
Mix Wet Ingredients Thoroughly
In the same bowl with the mashed bananas, add the 1 cup vegetable oil, 1.5 cups granulated sugar, 1 tsp vanilla extract, and 0.5 cup unsweetened applesauce. Stir everything together until completely combined and smooth. The applesauce might seem like an odd addition, but it adds extra moisture and helps create that tender crumb we're after.
I always mix this for about 2 minutes with a whisk to make sure the sugar dissolves completely. You want the mixture to be uniform in color and texture—no streaks of sugar or oil. This is where the magic happens for that ultra-moist cake. The oil replaces butter perfectly here, keeping the cake tender without being greasy.
Combine Dry Ingredients
In a separate bowl, whisk together the 2 cups all-purpose flour, 1 tsp baking soda, and 0.5 tsp salt. Sift the flour first if you can—this prevents lumps and ensures even distribution. The baking soda is crucial here; it reacts with the acids in the bananas to create lift and that classic banana cake flavor.
I like to make a small well in the center of the dry ingredients and pour about ⅓ of the wet mixture into it. Then I gently fold everything together with a spatula, being careful not to overmix. You're looking for just until combined—no more than 10-12 strokes. Overmixing develops gluten and can make your cake tough. The batter should be thick but pourable.
Bake to Perfect Doneness
Preheat your oven to 350°F and grease two 8-inch round cake pans or one 9x13-inch baking pan. Pour the batter evenly into your prepared pan(s)—fill them about ⅔ full. Bake for 30-35 minutes if using round pans, or 40-45 minutes for the sheet pan, until a toothpick inserted in the center comes out clean with just a few moist crumbs.
Here's where it gets tricky: don't overbake. The cake will continue cooking slightly as it cools, and you want it to stay moist, not dry. I check it at the 25-minute mark for round pans and 35 minutes for the sheet pan. When you see the edges pulling away from the pan and the top springing back when touched, it's ready. Let the cake cool in the pan for 10 minutes before transferring to a wire rack.
Dust and Serve
Once completely cooled, dust the top with the 0.25 cup powdered sugar if using. I like to sift it through a fine-mesh sieve for an even, snowy finish. This isn't just for looks—it adds a subtle sweetness that balances the banana flavor perfectly. The cake should be moist but not soggy, with a tender crumb that practically melts in your mouth.
Slice when completely cool for clean cuts, but enjoy it warm if you can't wait—the aroma alone will make your kitchen smell amazing. This cake keeps well at room temperature for 3 days or can be frozen for up to 3 months. The oil-based batter actually helps it stay moist longer than traditional butter cakes, which is why this recipe works so well.
Pro Tips For Making Banana Cake Recipe Oil Not Butter
- Mash Bananas Thoroughly: I learned this the hard way—lumpy banana purée means dense cake. Use a fork first, then press through a fine-mesh sieve or strainer to remove skins and fiber. No blender? A potato masher works, but elbow grease is key.
- Measure Oil by Weight: Vegetable oil’s volume varies wildly by brand. Instead of eyeballing, weigh it—225g (1 cup) for a standard recipe. Cold oil in the bowl? Let it sit at room temp for 10 minutes first, or the batter will seize up.
- Check Doneness at 325°F: Oil-based cakes dry out faster than butter cakes. Pull yours when a toothpick comes out with moist crumbs (not wet batter) at 325°F for 25–30 minutes. Overbaking turns them gummy—trust the crumb test, not the timer.
- Swap 1 Egg for Yogurt: No eggs? Mix ¼ cup plain yogurt (or sour cream) with the mashed bananas. It keeps the cake tender and adds a subtle tang that cuts through the sweetness—no extra beating required. (Yes, even if you’re impatient like me.)
Regional styles of these flavors
Southern Comfort Style
In the South, banana cake often gets a warm, spiced twist. Add 1 tsp cinnamon and ½ tsp nutmeg to the dry ingredients for that classic Southern flavor. I like to fold in ½ cup chopped pecans for crunch—it's a nod to the pecan pie tradition. Serve with a simple cream cheese frosting for that Southern comfort feel. 🌶️
Midwest Homestyle Twist
The Midwest loves its banana bread, so why not adapt it to cake form? Swap the applesauce for ½ cup Greek yogurt (if you're okay with dairy) for extra richness. Top with toasted walnuts and a drizzle of honey glaze—just mix ½ cup powdered sugar with 1 tbsp honey and 1 tsp lemon juice. This version has a slightly tangy edge that balances the sweetness perfectly. 🍯
Pacific Northwest Adaptation
Out West, they love their fruit-forward flavors. Add ½ cup mashed blueberries or raspberries to the batter for bursts of color and tartness. Use avocado oil instead of vegetable oil for a neutral but slightly richer taste. Top with a dollop of whipped coconut cream for a tropical vibe—this is my go-to for summer gatherings. 🌈
Global Fusion Ideas
For a Japanese-inspired twist, add 1 tbsp matcha powder to the dry ingredients and top with white chocolate shavings. Or go Italian by folding in ½ cup finely chopped dried apricots and a pinch of orange zest. Both versions keep the cake moist while adding exciting new flavors. The matcha version has a subtle earthiness that pairs beautifully with the banana. 🌏
Weeknight Simplicity
For a quick weeknight dessert, halve the recipe and bake in a 9-inch bundt pan. The oil keeps it moist, and the intricate shape makes it feel special without extra effort. Dust with powdered sugar or serve with a scoop of vanilla ice cream. It's the perfect way to use up ripe bananas before they go bad. 🍌
Nutrition facts
Frequently asked questions
Why use oil instead of butter in banana cake?
Oil creates a moist, tender crumb that stays fresh longer than butter-based cakes. It also keeps the cake from drying out as quickly, making it perfect for meal prep. Plus, oil has a neutral flavor that lets the banana shine without any dairy taste.
Can I substitute applesauce with something else?
Yes! Use ½ cup mashed banana or Greek yogurt (if you want a slight tang). For a vegan option, silken tofu works well too—just blend it until smooth. The key is maintaining the cake's moisture level.
Why does my banana cake turn out dense? Overmixing the batter or using underripe bananas are common culprits.
How do I make this cake vegan?
Replace the vanilla extract with vegan vanilla and use coconut oil instead of vegetable oil. For the applesauce, ensure it's unsweetened and vegan-certified. The rest of the recipe stays the same—it'll still be ultra-moist and delicious!
Can I use this recipe for banana bread instead?
Reduce the flour to 1.5 cups and add ½ cup chopped walnuts or chocolate chips. Bake in a 9x5-inch loaf pan at 350°F for 50-55 minutes. The oil keeps it moist, and the texture will be perfect for slicing and toasting.