One bowl banana bread mixes mashed ripe bananas with melted butter, sugar, egg, vanilla, and flour for a simple baked loaf. Expect a moist crumb and a browned top that slices more neatly after cooling.
Use an eight-by-four-inch loaf pan and bananas with plenty of brown spots. The recipe makes ten slices, and the total time includes cooling rather than ending when the loaf leaves the oven.
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Why This Recipe Works
Very ripe bananas mash smoothly and provide both moisture and sweetness. Melted butter blends easily into the fruit without a creaming step or electric mixer. Folding flour only until it disappears limits gluten development, while an appropriate loaf-pan size lets the batter rise and cook through without spreading into a shallow layer.
Ingredients
Three medium ripe bananas should give approximately one and a quarter to one and a half cups mashed fruit. Use one and a half cups all-purpose flour, spooned and leveled. Measure the third cup of butter before melting and let it cool slightly. The egg should be beaten, and baking soda should be fresh and free of lumps. A pinch of salt is enough for the listed formula. Have a little additional butter or cooking spray available for the pan.
Main Ingredients
- 3 ripe bananas, mashed, about 1 1/4–1 1/2 cups
- 1/3 cup butter, melted and slightly cooled
- 1 teaspoon baking soda
- 1 pinch salt
- 3/4 cup granulated sugar
- 1 large egg, beaten
- 1 teaspoon vanilla extract
- 1 1/2 cups all-purpose flour, spooned and leveled
As Needed
- butter or cooking spray, as needed to grease the pan
How to Make One Bowl Banana Bread
1. Prepare the pan and mash. Heat the oven to 350°F and lightly grease an eight-by-four-inch loaf pan. Mash the peeled bananas in a large bowl with a fork until mostly smooth, leaving only small soft pieces. Large chunks create uneven wet pockets in a slice. Bananas that are still firm and pale are harder to mash and do not provide the same sweetness as spotted, ripe fruit.
2. Blend the wet ingredients. Stir the slightly cooled melted butter into the banana, then mix in sugar, beaten egg, and vanilla. Butter should be warm or at room temperature rather than very hot when it meets the egg. Stir until the egg is evenly distributed and the mixture looks consistent, scraping the bottom of the bowl so unmixed banana does not remain underneath.
3. Fold in the flour. Spread the flour evenly over the wet mixture, then sprinkle the baking soda and salt across it before folding carefully. Use a spatula and stop as soon as no dry flour remains. The batter should be thick and spoonable. Vigorous beating at this point can make the loaf chewy and produce tunnels, so scrape it into the pan without prolonged mixing.
4. Bake and cool before cutting. Level the surface and bake on the middle rack for about fifty-five to sixty-five minutes. Check a skewer inserted into the center: a few moist crumbs are fine, but wet batter needs more time. If the top browns too quickly, cover it loosely with foil for the remaining bake. Rest ten minutes in the pan, turn out onto a rack, and allow about fifty more minutes to cool before cutting ten slices.
How to Serve
Serve plain slices for breakfast or add a thin spread of butter after cutting. The loaf is moist enough to enjoy without a glaze. For a brunch platter, slice only what you need and keep the rest wrapped; exposed cut surfaces dry faster than an intact loaf.
Storage
Wrap the fully cooled loaf or store slices in an airtight container at room temperature for up to three days. In a warm, humid kitchen, refrigerate instead and expect a firmer crumb. Freeze wrapped slices for up to two months, separating them with parchment if helpful. Thaw while wrapped so the surface does not dry, then warm briefly or toast as desired. See federal cold-storage guidance for refrigerated foods.
Tips and Variations
- Use spotted, soft bananas and measure the mashed fruit if sizes vary greatly.
- Spoon and level flour rather than packing the cup.
- Check the loaf center instead of relying on crust color.
- Tent loosely with foil if the top browns before the center is ready.
Frequently Asked Questions
Can I use frozen bananas?
Yes, thaw them and drain excess watery liquid before mashing. Measure the fruit because sizes vary.
Can I use a nine-by-five-inch pan?
Yes, the loaf will be shorter. Begin checking earlier because a shallower batter layer may bake faster.
Can I add nuts?
A small handful of chopped walnuts can be folded in at the end. They are an optional addition to the plain loaf.
Can I use baking powder instead?
It is not a direct same-amount replacement for baking soda. Use a formula designed for baking powder if that is what you have.
Why is the center gummy?
Underbaking, too much mashed banana, or slicing very hot can leave a gummy center. Check the batter measurements and let the loaf cool before cutting.
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One Bowl Banana Bread with Melted Butter
Ingredients
Main Ingredients
- 3 ripe bananas mashed, about 1 1/4–1 1/2 cups
- 1/3 cup butter melted and slightly cooled
- 1 teaspoon baking soda
- 1 pinch salt
- 3/4 cup granulated sugar
- 1 large egg beaten
- 1 teaspoon vanilla extract
- 1 1/2 cups all-purpose flour spooned and leveled
As Needed
- butter or cooking spray as needed to grease the pan
Instructions
Mix and Bake
- Heat oven to 350°F and lightly grease an 8×4-inch loaf pan. Mash bananas in a large bowl to about 1 1/4–1 1/2 cups.
- Stir slightly cooled melted butter into the bananas. Mix in sugar, beaten egg, and vanilla until evenly blended.
- Add flour, baking soda, and salt evenly and fold just until no dry flour remains. Scrape into the pan and level the top.
- Bake at 350°F for 55–65 minutes until a skewer in the center comes out with moist crumbs and no wet batter. Loosely tent with foil if the top browns early.
- Cool in the pan 10 minutes, then turn onto a rack for about 50 more minutes. Cut into 10 slices once cooled.
Notes
- Wrap only after the loaf has cooled completely; keep at room temperature for up to 3 days.
- Freeze wrapped slices for up to 2 months and thaw while covered.
