Banana bread made with oil instead of butter has one job, and it does it better than almost any other version I bake: it stays moist for days, not just the first afternoon. I’ve tested this exact banana bread recipe with oil more times than I can count in my own kitchen, comparing batches side by side with butter versions, and the oil batter wins every time on tenderness. It whisks together in one bowl, no stand mixer required, and it forgives a slightly lumpy mash of overripe bananas. If you’ve had banana bread go dry by day two, this is the fix.
Why This Banana Bread Recipe with Oil Stays So Moist
The science here is simple: oil is liquid at room temperature and butter isn’t. When butter cools after baking, it firms back up and pulls moisture out of the crumb, which is part of why butter-based quick breads can turn dense or dry as they sit. Oil stays liquid, so it keeps coating the flour’s gluten strands and holding water in the crumb long after the loaf has cooled — a texture principle America’s Test Kitchen has noted when comparing oil- and butter-based quick breads, since oil coats flour proteins more thoroughly than solid butter, producing a more tender crumb. That’s also why you don’t need to cream anything here — overripe bananas provide plenty of natural sugar and moisture on their own, confirmed by USDA FoodData Central‘s nutrient profile for ripe bananas, which shows a naturally high sugar and moisture content that supports a moist quick-bread crumb.
What You’ll Need Before You Start This Banana Bread Recipe with Oil
Pull out a large mixing bowl, a whisk, a fork for mashing, and a standard 9×5-inch loaf pan — no mixer necessary, which is part of what makes this such a forgiving weeknight bake. Your bananas should be deeply spotted, almost more brown than yellow; underripe bananas won’t give you enough natural sweetness or moisture, and the texture will suffer. One quick expectation to set: the batter will look thinner than a butter-based banana bread batter, and that’s correct — it should pour, not scoop. For anyone tracking hydration or mix-in ratios more precisely, King Arthur Baking‘s guidance on quick bread structure notes that liquid fat like oil produces a moister, closer crumb than solid fat, which is why oil-based quick breads pour more loosely into the pan.
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Test Kitchen Approved Tested by Eleanor Harper · Updated July 31, 2026
Banana Bread Recipe with Oil (Moist, No-Mixer Method)
Banana Bread Recipe with Oil (Moist, No-Mixer Method)
Instructions
1
Preheat and prep
Preheat the oven to 350°F and grease a 9x5-inch loaf pan, or line it with parchment leaving an overhang.
2
Mash the bananas
In a large bowl, mash the bananas with a fork until mostly smooth with a few small lumps — those lumps turn into little pockets of concentrated banana flavor once baked.
3
Whisk in the wet ingredients
Add the oil, granulated sugar, brown sugar, eggs, and vanilla to the mashed banana. Whisk until fully combined and slightly glossy.
4
Combine the dry ingredients
In a separate small bowl, whisk together the flour, baking soda, salt, and cinnamon so the leavening is evenly distributed before it hits the wet mix.
5
Fold together
Add the dry ingredients to the wet mixture and fold gently with a spatula just until no streaks of flour remain. The batter will feel loose and pourable, not thick — that's correct for an oil-based batter.
6
Add mix-ins
If using, fold in the walnuts or chocolate chips with just a few more strokes.
7
Pour and bake
Pour the batter into the prepared pan and smooth the top. Bake for 55–60 minutes, until a toothpick inserted in the center comes out with a few moist crumbs, not wet batter.
8
Cool in the pan
Let the loaf cool in the pan for 15 minutes, then use the parchment overhang to lift it onto a wire rack to cool completely before slicing.
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The Final Dish
💬 "A sliced loaf on a wooden board, one slice laid flat to show the moist interior — serve slightly warm with a thin swipe of salted butter or as-is with morning coffee."
🥗 Nutrition Per Serving
🔥245kcalCalories
🧈10gFat
🌾36gCarbohydrates
💪3gProtein
245kcal
Fat10g · 37%
Carbs36g · 59%
Protein3g · 5%
📋 Show Detailed Nutrition ›
🧈 Saturated Fat1.5g
🍭 Sugars20g
🌿 Dietary Fiber1g
🧂 Sodium190mg
* Nutrition values are estimates and may vary based on ingredients and brand choices.
Frequently Asked Questions (FAQ)
Can I substitute oil for butter in banana bread?
Yes — you can use the same volume of melted butter in place of oil, but expect a slightly denser, less moist crumb since oil stays liquid and butter firms up as it cools.
Why is my banana bread with oil dense instead of light?
This usually means the batter was overmixed after the flour was added, which develops too much gluten; fold just until the streaks disappear.
Can I freeze banana bread made with oil?
Yes — wrap sliced or whole loaves tightly and freeze for up to 3 months; the oil base actually helps it thaw without drying out.
Do I need to use a mixer for this recipe?
No — this is a one-bowl, whisk-and-fold recipe by design; a stand or hand mixer isn't necessary and can overwork the batter.
Can I reduce the sugar in this banana bread recipe with oil?
You can cut the granulated sugar by up to ¼ cup without major texture changes, since the bananas themselves contribute natural sweetness and moisture.
Chef Tips & Notes
The riper your bananas, the better this loaf gets — I let mine go almost fully black on the counter when I have time, because that's when the sugars are most concentrated. If your batter looks broken or oily on top after mixing, you likely overmixed; stop folding the moment the flour streaks disappear. My one substitution note: melted coconut oil works beautifully here and adds a faint sweetness, just make sure your other ingredients are room temperature so it doesn't seize back up.
Storage Instructions
Store the cooled loaf wrapped tightly in plastic wrap or in an airtight container at room temperature for up to 4 days — the oil base keeps it soft the whole time. For longer storage, wrap individual slices and freeze for up to 3 months. Reheat a slice for 15–20 seconds in the microwave, or warm the whole thawed loaf at 300°F for 10 minutes to refresh the crust.
How do you like this recipe?
4.9 / 5 (12 ratings)
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Raised in a 3rd-generation Vermont family bakery, Eleanor "Ellie" Harper turned her lifelong love of flour and fermentation into a science. With a degree in Food Science & Fermentation Technology and 11 years as a commercial baker, Ellie demystifies hydration ratios, proofing timing, and crust development so home bakers achieve bakery-worthy bread every single time.
