Desserts
This banana cake recipe with oil and milk delivers ultra-moist layers that stay tender for days—no dry crumbs in sight. The secret lies in the oil and milk combination, which creates a velvety texture while keeping the cake wonderfully light. I've perfected this classic version over years of baking, ensuring every slice is packed with banana flavor and just the right amount of sweetness.
The oil in this recipe replaces butter, creating a rich, moist crumb without adding excess richness. Whole milk enhances the tenderness, while ripe bananas contribute natural sweetness and moisture. This isn't your typical banana cake—it's a foolproof recipe that delivers professional-quality results every time, even for beginners.
What you'll end up with is a perfectly golden-brown cake with moist layers that crumble just slightly at the edges. The aroma as it bakes will fill your kitchen, and each bite delivers that perfect balance of sweetness and banana flavor. The texture stays soft for days, making it ideal for meal prep or special occasions.
This recipe uses simple ingredients and requires just 350°F for about 45 minutes—easy enough for a weeknight treat but impressive enough for guests. Let's get started on creating your moistest banana cake yet!
Ingredients for banana cake recipe with oil and milk
Simple ingredients that combine for a banana cake with velvety texture and lasting moisture.
| Ingredient | Amount | Notes |
|---|---|---|
| Ripe Bananas 🍌 | 2 cups | Mashed, no brown spots |
| All-Purpose Flour 🌾 | 2 ½ cups | Sifted, spooned lightly |
| Granulated Sugar 🍚 | 1 ½ cups | White or light brown |
| Vegetable Oil 🫒 | 1 cup | Light or canola preferred |
| Whole Milk 🥛 | 1 cup | Room temperature |
| Baking Soda 🧂 | 1 tsp | Pure, not baking powder |
| Salt 🧂 | ½ tsp | Fine sea salt preferred |
| Vanilla Extract 🌸 | 2 tsp | Pure alcohol-free if preferred |
| Large Eggs 🥚 | 2 whole | Room temperature |
| Unsalted Butter 🧈 | ½ cup | Melted, cooled slightly |
| Walnut Halves 🥜 | ½ cup | Toasted, optional topping |
The bananas are the foundation—choose extra-ripe ones with brown specks for maximum sweetness and moisture. Whole Foods or local markets often have the best selection, but grocery store bananas work fine if they're ripe. The oil is non-negotiable here; vegetable or canola oil (not butter) creates that signature moist crumb. For the flour, King Arthur brand is my go-to—it's finely milled and gives consistent results. The baking soda needs to be fresh; if it's more than six months old, test it in vinegar first. Eggs should be at room temperature for even baking, and the milk needs to be whole for optimal tenderness.
No vegetable oil? Avocado or melted coconut oil works in a pinch, though flavor may vary slightly. Substituting milk? Full-fat coconut milk gives similar richness, but avoid almond milk—it's too thin. For the sugar, light brown sugar adds subtle depth, though white sugar keeps the cake lighter. If you're avoiding eggs, flax eggs (1 tbsp ground flaxseed + 3 tbsp water per egg) work well. The walnuts? Toast them in the same oven as the cake for 5 minutes at 350°F—they'll release their aroma and complement the banana flavor perfectly. For extra moisture, add 2 tbsp sour cream to the batter.
Store the cake in an airtight container at room temperature for up to 3 days—it stays moist surprisingly well. For longer storage, wrap tightly in plastic wrap and refrigerate for up to 5 days. The texture actually improves slightly after the first day as the flavors meld. To reheat, wrap a slice in a damp paper towel and microwave for 10-15 seconds—this restores the softness. Freezing isn't ideal for banana cake, but if you must, slice and freeze for up to 2 months—thaw at room temperature before serving. The walnut topping keeps best if added fresh, but you can toast extra and store them separately for up to 1 week.
Why You'll Love This Recipe
- No Mash Required: I just dump those overripe bananas straight into the bowl—no peeling, no blending, no mess. The oil keeps it moist, and the milk adds that soft, tender crumb without needing fancy techniques.
- Sweet Without Overdoing It: The bananas bring natural sweetness, so I cut the sugar in half and still get that perfect balance. That rich oil-milk combo? It’s like a hug for your taste buds—creamy but not heavy.
- Breakfast or Dessert: Honestly, this cake works for both. Serve it warm with a drizzle of honey for breakfast, or frost it with whipped cream for a quick dessert. My kids ask for it at both meals—no judgment here.
- Pantry Staples Only: Between us, this recipe uses stuff you already have. No weird ingredients, no last-minute store runs. That flour, sugar, and oil? They sit in my cupboard until I remember bananas are getting too soft.
Step-by-step instructions for banana cake with oil and milk
Master the art of ultra-moist banana cake using time-tested techniques and precise measurements.
Prepare the Banana Mixture
In a large mixing bowl, combine the 2 cups ripe bananas with the 1.5 cups granulated sugar and the 1 cup vegetable oil. Mash the bananas thoroughly with a fork until completely smooth—no visible chunks should remain. This ensures even distribution of moisture throughout the batter.
Next, add the 1 cup whole milk, 2 whole large eggs, and 2 teaspoons vanilla extract. Whisk vigorously for 2-3 minutes until the mixture is fully emulsified and smooth. The batter should be thick but pourable, with no streaks of egg white remaining. This step creates the foundation for that signature moist crumb.
Combine Dry Ingredients
In a separate bowl, sift together the 2.5 cups all-purpose flour, 1 teaspoon baking soda, and 0.5 teaspoon salt. This step prevents lumps and ensures even distribution of leavening agents. Gently fold the dry ingredients into the banana mixture using a spatula, mixing just until combined—overmixing develops gluten and can make the cake dense.
Stop mixing as soon as the flour disappears. The batter should be thick and slightly sticky, resembling a well-blended cake batter. For extra richness, fold in the 0.5 cup melted unsalted butter (cooled slightly) until fully incorporated. This butter adds depth of flavor and contributes to the cake's signature moistness.
Bake for Perfect Texture
Preheat your oven to 350°F and grease two 9-inch round cake pans or one 9x13-inch baking pan with butter or nonstick spray. Pour the batter evenly into the prepared pan(s). For even baking, tap the pans gently on the counter to release any air bubbles.
Bake for 30-35 minutes (or 25-30 minutes for the larger pan) until a toothpick inserted into the center comes out clean. The cake should be golden brown on top with slightly domed edges. If using separate round pans, rotate them halfway through baking for even browning. Overbaking dries out the cake, so keep an eye on it during the last 5 minutes.
Cool and Serve
Remove the cake from the oven and let it cool in the pan for 10 minutes. This allows the cake to set slightly before transferring to a wire rack. For even cooling, invert the cake onto the rack and let it cool completely before slicing.
Once cooled, you can add the 0.5 cup toasted walnut halves as a topping if desired. Serve slices at room temperature for the best texture—this cake is best enjoyed within 2-3 days when stored in an airtight container. The moist layers and subtle sweetness make it a classic dessert that never disappoints.
Pro Tips For Making Banana Cake Recipe With Oil And Milk
- Mash Bananas Thoroughly: I learned this the hard way—lumpy banana puree means uneven texture. Use a fork first to break them up, then press through a fine-mesh sieve or strainer to remove skins and fiber. No food processor? Hand-mash with a potato masher until completely smooth—this makes a lighter, more tender crumb.
- Preheat Pan 10 Minutes: Banana cakes rise fast but can also dry out. Preheat your oven to 350°F (175°C) and let the pan sit for 10 minutes before pouring the batter. The extra heat ensures even baking and prevents a gummy center—especially important if your kitchen runs cold.
- Weigh Your Flour: Spooning flour from the bag packs it too tightly, leading to a dense cake. Use a kitchen scale for precision—most recipes call for 200g (about 1¾ cups) of all-purpose flour. If you must measure by volume, fluff the flour first and scoop, then level with a knife.
- Add Oil Gradually: Dumping all the vegetable oil at once can make the batter greasy. Mix in about ½ cup first, then add the rest while stirring on low speed. This keeps the texture moist without turning the cake heavy—trust me, your taste buds will notice the difference.
Make-ahead tips for this recipe
Prep Ahead for Perfection
Make the batter up to 24 hours ahead and store it in an airtight container in the fridge. The flavors meld beautifully overnight, and the batter will be perfectly chilled for baking. I always prep mine the night before—it saves time on busy mornings and ensures even baking. Just let the batter sit at room temperature for 30 minutes before pouring into pans for best results. 💫
Freezer-Friendly Batter
For ultimate convenience, freeze the batter in 1-cup portions in airtight freezer bags. Thaw overnight in the fridge before baking—no need to defrost completely. I keep a batch ready in my freezer for impromptu dessert cravings. Just remember, frozen batter may require 5-10 extra minutes in the oven since it starts cold.
Layered Cake Prep
If making a layered cake, bake and cool the layers completely, then wrap them tightly in plastic wrap. Store at room temperature for up to 2 days before assembling. I like to add a layer of vanilla cream cheese frosting between layers for extra moisture. Assemble the cake just before serving to maintain that fresh-baked texture.
Walnut Prep Shortcut
Toast your walnuts in advance and store them in a sealed container at room temperature for up to 1 week. I usually toast a big batch whenever I make this cake—it doubles as a crunchy topping for salads or yogurt. For extra flavor, toss them with 1 tsp cinnamon before adding to the cake.
Portion Control
Slice the cake into 1-inch thick portions and store them individually in airtight containers. This prevents the cake from drying out between slices. I like to wrap each portion in parchment paper before storing—it keeps them moist for days. Perfect for grab-and-go breakfasts or after-dinner treats!
Make-Ahead Frosting
Prepare your frosting (like cream cheese or chocolate ganache) up to 3 days ahead and store it in the fridge. Bring it to room temperature before assembling the cake. I often make a simple powdered sugar glaze (2 cups powdered sugar + 2 tbsp milk) that sets quickly and adds a professional finish. Just brush it on right before serving for that fresh-from-the-oven look. 🍰
Nutrition facts
Frequently asked questions
Why does this banana cake use oil instead of butter?
The oil creates an ultra-moist texture that stays tender for days, while butter can sometimes make cakes dry out faster. Vegetable or canola oil blends seamlessly with the banana flavor and keeps the crumb soft and rich. For extra richness, we add melted butter at the end—it's the best of both worlds!
Can I substitute milk with something else?
Yes! For similar richness, use full-fat coconut milk or buttermilk. Avoid almond milk—it's too thin and won't give the same tender texture. If you're dairy-free, the coconut milk works beautifully and adds a subtle tropical note that pairs well with banana.
How do I know when the cake is fully baked?
Insert a toothpick into the center—it should come out clean with just a few moist crumbs. The cake should also spring back slightly when gently pressed. I recommend checking at 30 minutes and rotating the pans if using round cakes for even baking. Overbaking dries out the moist texture we worked so hard to create!
Can I make this cake without eggs?
Replace the 2 eggs with 2 flax eggs (1 tbsp ground flaxseed + 3 tbsp water per egg). Let them sit for 5 minutes to thicken before adding to the batter. The texture will be slightly denser but still moist and delicious. This works especially well if you're avoiding eggs for dietary reasons.
How do I store leftovers to keep them moist?
Store slices in an airtight container at room temperature for 2-3 days. For longer storage, refrigerate for up to 5 days—wrap each slice individually in plastic wrap to prevent drying. To revive stale slices, microwave for 10-15 seconds with a damp paper towel covering them. The walnut topping stays best if added fresh, but you can toast extra nuts separately and store them for up to 1 week.