Banana Bread Brownies

I’ve been making these banana bread brownies for years when I have a couple of overripe bananas and a craving for something fudgy but homey. They sit squarely between quick banana bread and a dense cocoa brownie—moist from the bananas, lightly cakey, and studded with melty chocolate if you like. They’re perfect for an afternoon snack, school lunch treats, or a last-minute dessert when guests pop by. For a breakfast pairing, I sometimes serve a slice alongside a smoothie like the peanut butter banana oat smoothie for a textural contrast.

Why you’ll love this dish

This recipe is where pantry frugality meets comfort baking. Two overripe bananas turn into a rich, cocoa-forward square that’s faster than a loaf and less fragile than a brownie — ideal when you want something sweet without a lot of fuss. It’s budget-friendly, kid-approved, and easy to tweak for diets (dairy-free oil swap, gluten-free flour blend). Make it for an after-school treat, brunch bake sale, or a cozy weekend coffee break.

“A perfect solution to ripe bananas — all the banana flavor with a chocolatey lift. My kids call it breakfast brownie.” — an enthusiastic kitchen test-reader

For a fruity bread option on a different day, you might like the glazed strawberry bread I turn to when strawberries are in season.

How this recipe comes together

This is a quick assembly recipe: mash bananas, mix in melted butter (or oil), beat in sugar, egg, and vanilla, then fold in a dry mix of flour, cocoa, baking soda, and salt. Stir in chocolate chips if you like, bake in a 9×9-inch pan for about 20–25 minutes, and cool briefly before slicing. Expect a moist crumb that’s fudgy but not gooey — the goal is a toothpick with a few moist crumbs when it’s done.

What you’ll need

2 ripe bananas, mashed (soft with brown speckles)
1/2 cup melted butter (or canola oil for a dairy-free version)
1 cup granulated sugar (or 3/4 cup granulated + 1/4 cup brown sugar for more depth)
1 large egg, room temperature (or flax egg for vegan: 1 tbsp ground flax + 3 tbsp water)
1 teaspoon vanilla extract
1 cup all-purpose flour (or a 1:1 gluten-free flour blend)
1/4 cup unsweetened cocoa powder (sifted if lumpy)
1/2 teaspoon baking soda
1/4 teaspoon salt
1/2 cup chocolate chips (optional; use dairy-free chips for vegan)

Notes: If your bananas are only slightly ripe, the banana flavor will be milder. For a richer chocolate hit, swap 2–3 tablespoons of flour for an equal amount of extra cocoa powder, but don’t overdo it or the texture will dry out. If you want a lighter, sweeter loaf-like result, try a touch more sugar or the mixed-sugar option above. For other dessert ideas, see the cottage-style bake inspiration like cottage cheese blueberry cloud bread.

Step-by-step instructions

Preheat the oven to 350°F (175°C). Grease a 9×9-inch pan or line it with parchment paper so the squares lift out easily.
In a medium bowl, mash the ripe bananas until mostly smooth — a few small lumps are fine.
Stir the melted butter into the bananas until combined. If using oil, mix it in the same way.
Add the sugar, then beat in the egg and vanilla until the mixture looks glossy and slightly aerated.
In a separate bowl, whisk together the flour, cocoa powder, baking soda, and salt to remove lumps and distribute the leavening.
Fold the dry ingredients into the wet banana mixture in two additions. Use a spatula and stop as soon as you no longer see streaks of flour — overmixing = tougher texture.
Fold in chocolate chips if using.
Pour the batter into the prepared pan and smooth the top with an offset spatula or the back of a spoon.
Bake 20–25 minutes, checking at 18 minutes. Insert a toothpick into the center — it should come out with a few moist crumbs, not wet batter.
Cool in the pan for 15–20 minutes, then lift out with the parchment and slice into squares once slightly cooled.

Best ways to enjoy it

Serve warm with a scoop of vanilla ice cream for an indulgent dessert.
Toast a slice lightly and spread a smear of peanut butter for a breakfast treat.
Cut into small squares and serve on a platter for a party; the brownies travel well.
Pair with a creamy coffee or espresso to balance the banana’s natural sweetness and the cocoa’s bitterness. If you like fancy frosting pairings, take inspiration from rich options like the green velvet brownies with cream cheese frosting for special occasions.

Storage and reheating tips

Room temperature: Store in an airtight container for up to 2 days. Keep away from direct sunlight to avoid drying.
Refrigerator: Wrap tightly or use an airtight container; they’ll keep 4–5 days and stay moist thanks to the banana.
Freezer: Wrap individual squares in plastic wrap then place in a freezer bag for up to 3 months. Thaw at room temperature or warm briefly in a 325°F (160°C) oven for 5–7 minutes.
Reheating: Microwave a single slice for 10–15 seconds to warm through, or use a toaster oven for 3–5 minutes to revive a slightly crisp edge. Always let frozen slices thaw before microwaving to avoid hot spots.

Safe handling: Because these contain eggs, refrigerate leftovers if you won’t eat them within a couple of days, especially in warm climates.

Pro chef tips

Banana ripeness matters: brown-spotted bananas are sweeter and more flavorful. Very black bananas give the best flavor but note they add extra moisture.
Measure flour by spooning it into the cup and leveling—don’t scoop directly with the cup to avoid a dense batter.
Sift cocoa powder into the flour to prevent lumps and to help it incorporate evenly.
Don’t overmix once you add the flour; develop as little gluten as possible for tender squares.
If you prefer a cakier texture, add 1–2 tablespoons more flour. For fudgier, slightly underbake by a minute or two, watching the toothpick test.
Swap butter for oil for a dairy-free, slightly more tender crumb. Oil produces a more “brownie-like” density.

Creative twists

Nutty crunch: fold in 1/2 cup chopped walnuts or pecans for texture.
Swirl: drop spoonfuls of peanut butter or Nutella on top and swirl with a skewer before baking.
Espresso boost: add 1 teaspoon instant espresso powder to intensify chocolate notes.
Double chocolate: fold 2 tbsp mini chips into batter and sprinkle more on top.
Vegan option: replace the egg with a flax egg and use dairy-free chocolate chips and oil.
Gluten-free: use a 1:1 cup-for-cup gluten-free flour blend and ensure baking soda is gluten-free certified.
For a decadent layered dessert, try this flavor stack alongside an indulgent bar like slutty brownies for a bake sale platter.

Common questions

Q: How ripe should the bananas be?
A: The bananas should be speckled brown or mostly brown for the best sweetness and flavor. Yellow with a few brown spots is the minimum; very black bananas are ideal for the richest banana flavor.

Q: Can I make this dairy-free or egg-free?
A: Yes. Use canola (or vegetable) oil instead of melted butter for dairy-free. For egg-free/vegan, use a flax egg (1 tbsp ground flax + 3 tbsp water, set 5 minutes) or a commercial egg replacer. Texture will change slightly but the banana helps keep moisture.

Q: What’s the best way to know when they’re done?
A: Use the toothpick test: it should come out with moist crumbs, not wet batter. The top will spring back gently when pressed. Overbaking dries them out, so check at the earlier end of the time range.

Q: Can I double the recipe for a larger pan?
A: Yes. Double and bake in a 9×13-inch pan, but add a few extra minutes and test frequently; larger pans need more time. Keep an eye on edges — they brown faster.

Q: Can I add nuts or dried fruit?
A: Absolutely. Stir in up to 1/2 cup of chopped nuts or dried fruit. Nuts add crunch; dried cherries or cranberries pair nicely with banana and chocolate.

Conclusion

If you want alternate takes or more photos and tips, Gemma offers a helpful walkthrough in her Banana Bread Brownies – Gemma’s Bigger Bolder Baking post. For another tested home cook version with different proportions, see the notes on Banana Bread Brownies – The Recipe Critic. Allrecipes also has a user-rated entry with extra community tips at Banana Bread Brownies Recipe – Allrecipes.