Zucchini Banana Bread

There is a point every July when the zucchini stops being a vegetable and starts being a situation.

I only plant two zucchini plants a season. That’s it. Two. And it is still more than one family can eat.

By midsummer I’m making spaghetti alla Nerano, then zucchini lasagna, then zucchini soup just to keep up — and there’s still enough left to hand off to friends, family, neighbors, and anyone unlucky enough to drive down our road that week.

This loaf is where the last of it goes. The bananas, I’ll admit, come from the store — I’m not out here growing my own bananas in Idaho. But the zucchini is homegrown, and that’s the half of this recipe that actually solves a problem.

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Why This Works

Shredded zucchini doesn’t add “vegetable” flavor to a quick bread — it adds moisture. Combined with ripe banana, it keeps this loaf soft for days instead of drying out the way plain banana bread can by day three. The zucchini also means you can use bananas that are only just ripe, not the black, weepy ones a traditional banana bread demands.

What to Expect

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• The batter will look heavier and wetter than a standard quick bread batter. That’s correct — don’t add extra flour to compensate.
• The top will crack down the middle as it bakes. That’s normal for a loaf this dense, not a sign of a problem.
• It tastes better on day two than day one. If you can stand to wait, wrap it and let it sit overnight.

Zucchini vs. Plain Banana Bread — What’s Actually Different

	Zucchini Banana Bread	Plain Banana Bread
Banana ripeness needed	Just ripe is fine	Needs very ripe, spotted bananas
Moisture level	Higher, stays soft longer	Dries out faster after day 2–3
Shelf life (counter)	3–4 days, airtight container	2–3 days
Uses up garden surplus	Yes — 2 cups shredded zucchini per loaf	No
Texture	Denser, more tender crumb	Lighter crumb

Ingredients

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Dry Ingredients

• 3 cups all-purpose flour
• 1½ teaspoons baking soda
• 1 teaspoon baking powder
• 1 teaspoon kosher salt
• 2 teaspoons ground cinnamon
• ¼ teaspoon ground nutmeg
• Optional: ¼ teaspoon ground cardamom

Wet Ingredients

• ½ cup unsalted butter, melted and slightly cooled
• ½ cup vegetable oil
• 1 cup packed brown sugar
• ½ cup granulated sugar
• 3 large eggs, room temperature
• 2 teaspoons vanilla extract

From the Garden

• 2 ripe bananas, mashed (about 1 cup)
• 2 cups shredded zucchini, lightly squeezed of excess water

Optional Mix-In

• ¾ cup mini chocolate chips

Finishing Touch

• Coarse sugar for topping

How to Make Zucchini Banana Bread

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Prep the Pan and Oven

Preheat your oven to 350°F. This batter is enough for two 9-inch loaf pans — a single 9-inch pan isn’t big enough and will likely overflow. Grease both pans, or line with parchment paper, leaving an overhang on the long sides for easy lifting.

Mix the Dry Ingredients

Whisk the flour, baking soda, baking powder, salt, cinnamon, nutmeg, and optional cardamom together in a large bowl. Set aside.

Mix the Wet Ingredients

In a separate bowl, whisk the melted butter, oil, brown sugar, and granulated sugar until combined. Add the eggs one at a time, then the vanilla. Whisk in the mashed banana.

Add the Zucchini

Fold the shredded zucchini into the wet mixture. Don’t skip squeezing the excess water out first — too much liquid here is the most common reason this bread turns out gummy in the middle.

Combine

Add the dry ingredients to the wet ingredients. Fold gently with a spatula just until no streaks of flour remain. Overmixing makes the loaf tough. Fold in chocolate chips now, if using.

Bake

Divide batter evenly between the two pans. Sprinkle with coarse finishing sugar for a crunchy topping. This is optional; once you try it, you probably won’t bake it again without it. Bake 45–55 minutes, until a toothpick inserted in the center comes out with a few moist crumbs, not wet batter. Tent with foil if the tops are browning too fast before the centers are done.

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Cool

Let the loaf cool in the pan for 15 minutes, then lift out using the parchment overhang and cool completely on a wire rack before slicing. Cutting it warm makes it gummy.

How to Store and Freeze Zucchini Banana Bread

On the counter: Wrap the cooled loaf tightly in plastic wrap or foil, or keep it in an airtight container. It stays good for 3-4 days at room temperature.

In the fridge: If your kitchen runs warm, the fridge will keep it fresh up to a week. Let slices come back to room temperature before eating for the best texture.

In the freezer (the move if you don’t need two loaves right now): Let the second loaf cool completely, then wrap it tightly in plastic wrap, followed by a layer of foil, and freeze whole for up to 3 months. Thaw overnight in the fridge or a few hours on the counter before slicing.

Prefer to freeze it pre-sliced? Slice the cooled loaf first, then freeze the slices in a single layer on a baking sheet for about an hour before transferring them to a freezer bag. That way you can pull out one slice at a time instead of thawing the whole loaf — handy for quick breakfasts.

Troubleshooting

Problem	Why It Happens	What to Do
Bread is gummy in the middle	Zucchini wasn’t squeezed dry enough	Squeeze shredded zucchini in a clean towel until water stops dripping before adding
Bread sank in the middle	Underbaked, or oven ran cool	Check doneness with a toothpick, not just time. Bake a few minutes longer next time
Top burned before center cooked	Oven runs hot, or pan is dark-colored	Tent with foil at the 35-minute mark
Bread is dry	Overbaked, or too much flour packed into the measuring cup	Spoon flour into the cup and level it — don’t scoop directly from the bag
Loaf won’t come out of the pan	Not greased well, or cooled too long inside the pan	Use parchment overhang for a clean lift every time

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• 9-inch loaf pan – this the heavy duty loaf pan that I like to bake with in my kitchen
• Set of 2 loaf pans – these loaf pans built for versatility—bake sweet and savory side by side for the same meal, or double up on a favorite recipe and freeze one for later
• Box grater – this grater makes quick work of grating veggies or cheese
• Parchment paper – perfect for for baking, cooking, air fryer or steaming

More Ways to Use Your Garden Zucchini

If two plants have you buried too, you’re in good company here — this is the same problem I solve every summer:

• Spaghetti alla Nerano
• Zucchini Lasagna with Béchamel
• Creamy Zucchini Soup with Basil
• Pumpkin Zucchini Bread — the fall version of this same trick

More From-Scratch Baking

• The Ultimate Banana Bread Recipe with Cinnamon Swirl & Streusel Topping

Browse the full Comfort Food From Scratch collection

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Two Plants, One Problem, and the Loaf That Solves It

By the time this loaf is in the oven, the zucchini season has usually won more rounds than I have. But this one’s a win for me.

Two plants really shouldn’t cause this much chaos every July. And yet — here we are, four recipes deep and still baking our way through it.

If you’ve got a garden doing the same thing to you right now, you’re in good company. Bake both loaves. Give one away if you have to. Keep the crunchy one for yourself.

I bake this early, before the Idaho summer heat sets in and turns the kitchen into its own kind of situation. By the time the loaf’s cool enough to slice, it’s still morning — which means it counts as breakfast, and nobody in this house is going to argue with me about that.

Simple Living ❤️ Country Style — two plants, four recipes, one very good loaf.

I’d love to know — what’s the most zucchini you’ve ever had to deal with in one summer? Tell me in the comments.

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Frequently Asked Questions

Do I need to peel the zucchini before shredding it?

No. The peel is thin and softens completely during baking — you won’t notice it in the finished loaf, and it saves a step.

Can I use frozen shredded zucchini?

Yes. Thaw it completely first and squeeze out the excess water — frozen zucchini releases even more liquid than fresh, so this step matters more, not less.

Why do I need to squeeze the water out of the zucchini?

Zucchini is mostly water. Skipping this step is the number one reason this type of bread turns out dense and gummy instead of tender. Just squeeze out the excess, no need to overdo it

Can I make this into muffins instead of a loaf?

Yes. Fill muffin cups two-thirds full and bake at 350°F for 20–22 minutes, checking with a toothpick.

How ripe do the bananas need to be?

You want bananas like the ones pictured — yellow with just a few dark spots, not the fully black, mushy ones a plain banana bread recipe calls for. The zucchini adds its own moisture, so you don’t need overripe bananas to get a moist loaf.

Can I substitute the oil with more butter?

Yes, though the texture will be slightly less moist. Oil keeps quick breads softer over multiple days than butter alone.

Is this recipe safe to can or preserve?

No — this is a baked quick bread, not a preserved product, and doesn’t fall under canning safety guidelines at all.

What size zucchini works best?

Medium zucchini, not the giant ones that hid under a leaf for two weeks. Very large zucchini tend to have more seeds and watery flesh.

What does the cardamom add — do I need it?

It’s optional, but it adds a warm, slightly citrusy note that plays well against the cinnamon and nutmeg. If you don’t have it, the bread is still good without it — just a little more straightforward in flavor.