Prep
- 1.Heat the oven to 350°F / 175°C. Grease a 9×5″ loaf pan and line it with a strip of parchment across the long sides, leaving an overhang to lift the loaf out later.
A moist, one-bowl banana bread on a baker's-percentage ratio, scaled by the weight of ripe mashed banana.
Last updated
About this recipe
Good banana bread is moist, tender, and unmistakably banana-forward, and it is about as forgiving as baking gets — one bowl, a fork to mash with, and no mixer required. The ratio is anchored to flour like everything else on the site, but the banana runs well above 100% of the flour weight. That looks odd next to a yeasted loaf, where the wettest ingredient rarely passes 75%, but mashed banana is doing double duty here as both the flavor and the main moisture source, so a quick bread this moist wants more banana than flour. Brown sugar carries the sweetness with a little caramel depth, and the leavening is baking soda rather than powder — the banana and the brown sugar are acidic enough on their own to activate the soda, and that reaction is what lifts the loaf.
The method is one bowl from start to finish. Mash very ripe bananas — the spottier and softer, the better — then whisk the wet ingredients together: banana, melted butter, brown sugar, eggs, and vanilla. Add the dry ingredients on top (flour, baking soda, cinnamon, salt) and fold just until the streaks of flour disappear. Stop there; overmixing develops gluten and toughens a quick bread, trading tender for rubbery. Pour into the pan and bake. I go by a toothpick rather than the clock — it should come out clean or with a few moist crumbs — and if the top browns before the center sets, I tent it loosely with foil for the last stretch.
Banana bread is the gluten-free-friendliest of these desserts, and it is worth saying plainly: the banana brings so much moisture and structure that a wheat-free loaf barely reads as a substitution. A 1:1 cup-for-cup blend drops straight in, and oat flour works just as well, giving a slightly denser, nuttier loaf. Expect a marginally tighter crumb either way, but nothing close to the trouble GF can cause in a leaner bake.
The ratio takes variations easily. Toasted walnuts or pecans are the classic add-in (toggle them on), chocolate chips are the crowd-pleaser, and the two are good together. A streusel or oat topping gives a crunchy lid; reducing the sugar toward the low end of its range makes a more banana-forward, less sweet loaf. A swirl of peanut butter folded through the batter, or a handful of fresh or frozen blueberries scattered in, both belong here too — banana is an easygoing base that welcomes almost anything.
At a glance
At its default setting, this Banana Bread recipe makes one loaf of about 900g — about 1127g of batter in total. In baker's percentage that breaks down to 239g AP flour (100%), 310g Mashed ripe banana (130%), 136g Light or dark brown sugar (57%), 105g Unsalted butter (44%), 95g Large eggs (40%), 4.8g Baking soda (2%), 2.4g Ground cinnamon (1%), 4.8g Vanilla extract (2%), 2.4g Fine sea salt (1%), 84g Walnuts or pecans (chopped) (35%), and 143g Chocolate chips (60%). Change the loaves or enter a target batter weight in the calculator and every amount rescales to match, in grams or ounces.
Make
Display unit
Eggs display
By count for cartons of whole eggs; by weight for liquid egg or precision baking.
Total batter
900g
Mix-ins
Saved to this device only — no account needed.
Step-by-step method
The whole loaf comes together in one bowl with a fork and a spatula. Mash very ripe bananas, whisk the wet ingredients smooth, fold in the dry just until the flour disappears, then pour and bake. The one rule that matters is not to overmix once the flour goes in — a few gentle strokes too many is what turns a tender quick bread tough.
If the top darkens before the center is set, tent it loosely with foil for the last 15 to 20 minutes.
Wrapped well, it keeps at room temperature for 3 to 4 days and freezes nicely for a couple of months.
Frequently asked
Use the calculator on this page. Pick your pan dimensions (or enter a total batter weight) and every ingredient amount updates automatically. The recipe is written in baker's percentage, so the ratio — and the texture — stays the same whether you bake an 8×8, a 9×13, or a half sheet.
Yes. The espresso powder is optional — it deepens the chocolate flavor without tasting like coffee, but the recipe works without it. Nuts and chocolate chips are mix-in toggles in the calculator: switch them on or off and the amounts update. Turning a mix-in off removes it cleanly without changing the rest of the ratio.
The brown-butter method cooks the butter to a nutty brown before mixing, which adds a deeper, almost caramel-edged flavor — at the cost of about 45 minutes of cooling time. The classic melt-and-whisk method is faster and still produces a rich, fudgy result. Both use the same ratio; only the butter handling changes.
More general questions about ratios, hydration, and the calculator on the FAQ page.
Background concepts
Foundational · Ingredients
A working guide to cocoa powder for baking: natural, Dutch-process, black cocoa, and specialty types. What each one does to flavor, color, and chemistry. Brand recommendations, the pH-and-leavening rule that explains when you can swap them, and which to reach for in the fudge brownie.
Read the guide →
Foundational · Ingredients
What flour, water, salt, yeast, sugar, oil, butter, eggs, milk, honey, and malt each contribute to bread — flavor, structure, fermentation, color, and texture. A practical reference for understanding any recipe and adapting it on purpose.
Read the guide →
Foundational · Bread math
What baker’s percentage actually means, why every bread recipe in the library uses it, and how to read a percentage at a glance. With worked examples and a quick-reference table.
Read the guide →