Moist Double Chocolate Banana Bread (One Bowl, No Mixer)
This double chocolate banana bread is everything you want in a quick bread: deeply chocolatey, super moist, and made in one bowl with a whisk.
It’s a great way to use up those speckled bananas on the counter. Ripe bananas keep the crumb tender for days, and the double dose of cocoa powder and chocolate chips makes every slice feel like a treat.
What Makes This Double Chocolate Banana Bread So Good
The bananas do double duty here: they add natural sweetness and keep the crumb soft for days. The cocoa powder gives a deep chocolate flavor that isn’t too sweet, and the melted chocolate chips create little pockets of gooeyness throughout the loaf.
It’s the kind of bread that gets devoured the same day you bake it, but if you manage to save a slice for tomorrow, it’s just as tender.
Ingredients
- 3 large ripe bananas (about 1 ½ cups mashed): the spottier the better for natural sweetness
- ½ cup (113 g) unsalted butter, melted: gives a fudgy crumb; salted works too, just omit added salt
- ⅔ cup (133 g) granulated sugar: balances the cocoa’s bitterness
- 2 large eggs, at room temperature: helps the loaf rise
- 1 teaspoon vanilla extract
- 1 cup (125 g) all-purpose flour: spooned and leveled, never scoop
- ½ cup (50 g) unsweetened cocoa powder: Dutch-process or natural both work
- 1 teaspoon baking soda
- ½ teaspoon fine sea salt
- ¾ cup (128 g) semisweet chocolate chips, plus extra for the top
Variations / Substitutions
- Butter: swap with melted coconut oil for a dairy-free loaf; the crumb will be a bit denser.
- Sugar: brown sugar adds a subtle molasses note and more moisture; use the same weight.
- Flour: a 1:1 gluten-free blend works well; no need to adjust liquids.
- Cocoa powder: Dutch-process gives a darker, less acidic flavor, but natural cocoa works. Don’t use hot chocolate mix.
- Chocolate chips: swap with chopped dark chocolate, white chocolate chips, or peanut butter chips.
If you love this, try my classic banana bread with a cinnamon swirl.
How to Make Double Chocolate Banana Bread
Step 1: Mash the Bananas and Whisk the Wet Ingredients
Preheat the oven to 350°F (175°C) and grease a 9×5-inch loaf pan or line it with parchment paper. Mash the 3 ripe bananas in a large bowl until smooth, then whisk in the melted ½ cup butter, ⅔ cup sugar, 2 eggs, and 1 teaspoon vanilla until combined.
The batter will look a little lumpy from the banana, which is fine. It should be a uniform liquid with no streaks of egg.
Step 2: Fold the Dry Ingredients into the Wet
Add the 1 cup flour, ½ cup cocoa powder, 1 teaspoon baking soda, and ½ teaspoon salt directly into the wet mixture. Use a flexible spatula to fold everything together just until no dry streaks remain; avoid overmixing.
The batter will be thick and glossy, with no pockets of flour. A few small lumps are okay.
Step 3: Stir in the Chocolate Chips
Fold in the ¾ cup chocolate chips until evenly distributed, then scrape the batter into the prepared loaf pan. Sprinkle a handful of extra chips on top for a pretty crackly top.
It’ll fill the pan about two-thirds full; smooth the surface with the spatula.
Step 4: Bake the Loaf
Bake on the middle rack for 55 to 65 minutes. Start checking at 55 minutes: a toothpick inserted into the center should come out with a few moist crumbs (not wet batter).
The top will be domed and crackly. If the bread browns too quickly, loosely tent with foil after 40 minutes.
Step 5: Slice and Serve the Bread
Let the loaf cool in the pan for 10 minutes, then lift it out and transfer to a wire rack to cool completely. Slice with a serrated knife and serve. The crumb will be deep brown, striped with melted chocolate.
Tips for the Best Double Chocolate Banana Bread
- Choose your bananas wisely: the skin should be mostly brown for the sweetest, most pronounced banana flavor. If they aren’t ripe enough, roast them in a 300°F (150°C) oven for 15 minutes to soften and sweeten.
- For a taller loaf, use a slightly smaller 8½x4½-inch pan and extend the bake time by about 10 minutes.
- The batter can be mixed ahead and refrigerated overnight; bring it to room temperature before baking and expect a slightly less domed top.
- If you want an extra fudgy slice, use mini chocolate chips — they disperse more evenly and melt into the crumb.
Oven times can shift subtly with different pan materials. Here’s a quick guide:
| Pan Material/Size | Approximate Bake Time | What to Watch For |
|---|---|---|
| Metal 9×5-inch | 55 to 62 minutes | Standard; check with toothpick at 55 minutes |
| Dark metal or glass 9×5-inch | 50 to 55 minutes | These pans run hotter; reduce time slightly |
| Mini loaf pans (3) | 30 to 35 minutes | Check a few minutes early |
Storing Leftovers
- Refrigerate: Wrap the cooled loaf tightly in plastic wrap or store in an airtight container; it stays moist 4 days in the fridge.
- Reheating: Warm individual slices in the microwave for about 15 seconds or in a 300°F (150°C) oven until just heated through.
- Serve Cold: This bread is wonderful at room temperature or even chilled straight from the fridge — the chips firm up and it tastes like a chocolate snack cake.
Frequently Asked Questions
Can I use frozen bananas?
Yes, thaw them completely and drain any excess liquid before mashing. The loaf may be a tiny bit denser but just as flavorful.
My bread sank in the middle. What happened?
It was likely underbaked or overmixed. Next time test with a toothpick and fold only until the flour disappears.
Can I reduce the sugar?
Yes, you can cut it to ½ cup. The bread will be slightly less sweet and a touch denser, but still good.
Can I add nuts?
Absolutely. Fold ½ cup chopped walnuts or pecans in with the chocolate chips for extra crunch.
Double Chocolate Banana Bread Recipe
Ingredients
Method
- Preheat the oven to 350°F (175°C). Grease a 9×5-inch loaf pan or line with parchment. Mash the bananas in a large bowl, then whisk in the melted butter, sugar, eggs, and vanilla until combined.
- Add the flour, cocoa powder, baking soda, and salt directly to the wet mixture. Fold with a spatula just until no dry streaks remain; don’t overmix.
- Fold in the ¾ cup chocolate chips, then scrape the batter into the prepared pan. Sprinkle extra chips on top and smooth the surface.
- Bake on the middle rack for 55 to 65 minutes, until a toothpick inserted in the center comes out with a few moist crumbs. If the top browns too quickly, tent loosely with foil after 40 minutes.
- Let cool in the pan 10 minutes, then lift out onto a wire rack to cool completely before slicing.
