Chocolate chip banana bread is the answer when you have speckled bananas and a craving for something sweet that comes together fast. It bakes into a tall, tender loaf with melted chocolate in every slice.

This one stays incredibly moist for days thanks to sour cream and very ripe bananas, and you only need one bowl and a whisk.

Why This Banana Bread Stays So Moist

Sour cream gives the crumb a tender, almost cake‑like texture without making the loaf heavy. The batter stays thick and rich, so the chocolate chips don’t sink.

Melted butter and plenty of mashed bananas keep it soft even on day three. You get a deep golden crust on the outside and a fluffy, damp crumb inside.

The chocolate chips turn into little pockets of sweetness that offset the mellow banana flavor. It’s the kind of loaf that barely makes it to the cooling rack.

Ingredients

4 very ripe bananas, mashed (about 1½ cups): the spottier the peel, the sweeter the bread
½ cup (1 stick) unsalted butter, melted and slightly cooled: salted butter works, just reduce the added salt to ¼ tsp
¾ cup granulated sugar: keeps the crumb light; brown sugar makes it denser and more caramel‑like
½ cup full‑fat sour cream: use full‑fat for the best texture
2 large eggs: bring to room temperature if you can
1 tsp vanilla extract
2 cups all‑purpose flour: spooned and leveled, not scooped
1 tsp baking soda
½ tsp fine sea salt
¾ cup semi‑sweet chocolate chips: regular size; mini chips distribute more evenly

Variations / Substitutions

Sour cream: full‑fat plain Greek yogurt works just as well.
Chocolate chips: swap for dark, milk, or even white chocolate. Reserve a small handful to scatter on top before baking.
Nuts: fold in ½ cup toasted walnuts or pecans for a little crunch.
Gluten‑free: use a 1‑to‑1 gluten‑free flour blend that contains xanthan gum.

If you have extra ripe bananas, our Fluffy Banana Pancakes are a great way to use them up.

How to Make Super Moist Chocolate Chip Banana Bread

Step 1: Mash the Bananas and Mix the Wet Ingredients

Preheat the oven to 350°F (177°C). In a large mixing bowl, mash the 4 bananas until mostly smooth. A few small lumps are fine. Add the ½ cup melted butter, ¾ cup sugar, ½ cup sour cream, 2 eggs, and 1 tsp vanilla. Whisk until the mixture is uniform and a bit glossy.

The color will be pale yellow with flecks of banana, and it should smell sweet and buttery. Don’t over‑whisk here, just combine it well.

Step 2: Fold in the Dry Ingredients and Chocolate Chips

Dump the 2 cups flour, 1 tsp baking soda, and ½ tsp salt right into the wet mixture. Use a rubber spatula to fold everything together gently. Stop as soon as no dry streaks remain. A few lumps are normal. Fold in the ¾ cup chocolate chips.

The batter will be thick and feel heavy on the spatula. Seeing small white streaks of flour here is okay. Overmixing at this stage makes the loaf tough and can cause the center to sink.

Step 3: Pour and Bake the Loaf

Scrape the batter into a greased 9‑by‑5‑inch loaf pan and smooth the top. Bake for 55–60 minutes, until a toothpick inserted in the center comes out with just a few moist crumbs (no wet batter). Start checking at the 50‑minute mark.

The top will rise, crack open, and turn a deep golden brown. If the crust darkens too quickly, lay a sheet of foil loosely over the pan after about 40 minutes.

Step 4: Cool and Slice

Let the bread cool in the pan on a wire rack for 10 minutes. Run a knife around the edges, lift the loaf out, and let it cool completely on the rack. Once it’s cool, slice with a serrated knife.

Slicing while the bread is warm is tempting, but it will crumble. Waiting an hour gives you clean, thick slices and the chocolate will set so it doesn’t smear.

Tips for the Best Banana Bread

Use a light‑colored metal loaf pan for the most even browning and a tender crust.
If you only have a glass pan, lower the oven temperature by 25°F and add a few extra minutes to the bake time.
For a salty‑sweet finish, sprinkle a little flaky sea salt over the batter before it goes into the oven.
Fluff the flour in its container, spoon it into the measuring cup, and level it off. Scooping directly from the bag packs in too much flour and makes the bread dry.

Bake times by pan size (the center should reach 200–205°F (93–96°C)):

Pan size	Bake time
9×5‑inch loaf pan	55–60 mins
8×4‑inch loaf pan	60–65 mins
Mini loaf pans	35–40 mins

Storing Leftover Banana Bread

Counter: Wrap the loaf tightly in plastic or store in an airtight container at room temperature for up to 3 days.
Refrigerator: Wrap well and refrigerate for up to a week. The chill deepens the flavor, but the bread firms up, so a quick microwave reheat (15–20 seconds) softens it.
Freezer: Wrap the whole loaf or individual slices in plastic, then foil, and freeze for up to 3 months. Thaw at room temperature.

Frequently Asked Questions

Can I use frozen bananas?

Yes. Thaw them completely and drain off any extra liquid before mashing. They are often even sweeter than fresh ones.

Why did my banana bread sink in the middle?

It likely needed more time in the oven, or the batter was overmixed. Make sure the toothpick comes out with only a few moist crumbs, not wet batter.

Can I make this without sour cream?

Swap in an equal amount of full‑fat plain Greek yogurt. The texture stays nearly identical.

How do I get more chocolate in every bite?

Use mini chocolate chips instead of regular ones. They spread through the batter more evenly and you get a little chocolate in every slice.