How Many Bananas for Banana Bread? (Cups, Grams + Recipe)

Banana bread recipes are maddeningly vague. “3 ripe bananas” could mean anything from 300 g to over 400 g depending on their size, and that difference decides whether your loaf is moist or gummy. Here is how to measure bananas properly, plus an easy recipe in both cups and grams.

How many bananas in a cup?

One cup of mashed banana weighs about 227 g, according to King Arthur Baking’s ingredient weight chart. A medium banana weighs about 118 g once peeled, so:

Banana sizes in grams

Bananas are sold in very different sizes, which is why weighing beats counting. Approximate weights after peeling:

A whole banana in its peel weighs roughly 50% more than the peeled fruit. If a recipe gives a weight, check whether it means peeled.

How ripe should the bananas be?

As ripe as you can stand: heavily speckled or mostly brown skin, soft flesh, strong banana smell. As bananas ripen, their starch turns to sugar, so they taste sweeter, mash smoothly and make a moister, more flavorful loaf. Yellow bananas with green tips give a bland, dry bread.

Need ripe bananas fast? Bake whole, unpeeled bananas on a tray at 300°F (150°C) for 15–20 minutes, until the skins turn black and shiny. Let them cool, then scoop out the soft flesh. They will be softer and a bit sweeter, but not as deeply flavored as naturally ripened ones.

Using frozen bananas

Overripe bananas freeze perfectly for banana bread. Peel them first (frozen peels are hard to remove), then freeze in a bag. To use, thaw in a bowl. They will release a lot of brown liquid: keep it and mash it in, because it is mostly banana juice and sugar. Measure the mashed banana including the liquid. If the batter looks very wet, add a tablespoon or two of extra flour.

Easy banana bread in cups and grams

This is a classic one-bowl banana bread for an 8½×4½ or 9×5-inch loaf pan.

1. Heat the oven to 350°F (180°C) and grease and line the loaf pan.
2. Mash the bananas in a large bowl. Stir in the melted butter, then the brown sugar, egg and vanilla.
3. Sprinkle the baking soda and salt over the batter and stir well, then fold in the flour (and nuts) just until no dry streaks remain. Don’t overmix.
4. Scrape into the pan and bake for 55–65 minutes, until a skewer in the center comes out clean or with a few moist crumbs. If the top browns too fast, cover loosely with foil after 40 minutes.
5. Cool in the pan for 10 minutes, then on a rack. It slices best once fully cool.

Baking soda works here because bananas and brown sugar are slightly acidic. Why that matters: baking powder vs baking soda. Gram weights come from our flour, brown sugar and butter pages.

Too many (or too few) bananas?

Most banana bread recipes are forgiving within about 50 g either way. Beyond that:

• Too much banana makes a heavy, gummy center that never seems to bake through. Use the extra in smoothies, or make muffins.
• Too little banana gives a drier, more cake-like loaf with less flavor. Top it up with a few tablespoons of yogurt or applesauce.

Doubling the recipe? Bake two loaves rather than one deep one. Halving it? See how to halve a recipe, including what to do with half an egg.

Banana bread muffins

The same batter makes about 12 muffins. Fill lined muffin cups about three-quarters full and bake at 350°F (180°C) for 20–25 minutes, until a toothpick comes out clean.

Matcha banana bread

Matcha banana bread has become one of the fastest-rising banana bread searches. The earthy green tea flavor pairs well with sweet, ripe banana. To make it from the recipe above:

• Whisk 1 to 2 tablespoons of culinary-grade matcha powder into the flour. Start with 1 tablespoon if you’re new to matcha; 2 gives a stronger color and a more bitter edge.
• Sift the matcha with the flour to avoid green lumps.
• For a marbled loaf, mix the matcha into only half of the batter and swirl the two together in the pan.
• White chocolate chips (about 1/2 cup, 85 g) are a popular addition.

Matcha browns and dulls in the oven, so the inside stays greener than the crust. Covering the loaf with foil for the last 20 minutes helps keep the top from darkening too much.

Lighter banana bread swaps

• Replace half the butter with plain yogurt or unsweetened applesauce. The bread stays moist but is a little denser.
• Use half whole wheat flour. Whole wheat flour weighs a little less per cup (113 g), so if you measure by weight, use the same grams as the recipe.
• Reduce the sugar to 1/2 cup (107 g) if your bananas are very ripe; they bring plenty of sweetness.

Loaf pan size and baking time

An 8½×4½-inch pan makes a taller loaf that needs the full 60–65 minutes. A 9×5-inch pan spreads the batter thinner, so it is often done in 50–55 minutes. Glass or dark metal pans bake faster at the edges; drop the oven by 25°F (15°C) if you use one. Mini loaf pans take about 30–35 minutes.

How to store banana bread

• Room temperature: wrapped tightly, 2 to 3 days. It actually tastes better on day two.
• Fridge: up to a week, though it dries out faster. Toast slices to bring them back.
• Freezer: wrap whole loaves or individual slices and freeze for up to 3 months. Thaw at room temperature.

Troubleshooting

• Sunken middle: underbaked, too much banana, or old baking soda.
• Dry and crumbly: too much flour. Spoon and level the flour, or weigh it: 1 1/2 cups should be 180 g. See how to measure flour.
• Burnt top, raw middle: oven too hot or a dark metal pan. Lower by 25°F (15°C) and cover with foil.
• Bitter or soapy taste: too much baking soda, or it wasn’t mixed in evenly.

Quick answers

• How many bananas is 1 cup mashed? About 2 medium bananas (227 g).
• How many bananas for banana bread? Usually 3 medium, about 1 1/2 cups or 340 g mashed.
• How much does a banana weigh? A medium banana weighs about 118 g peeled.
• What temperature for banana bread? 350°F (180°C) for 55–65 minutes in a loaf pan.
• Can you use frozen bananas for banana bread? Yes. Thaw them and mash in the liquid they release.