Moist Sour Cream Zucchini Bread Recipe
Tender, spiced, cinnamon-sugar-crusted, and it never once came out gummy.
By KC | Published July 27, 2026 · Updated July 27, 2026
My neighbor does not knock. She leaves zucchini on my porch like a ransom note and drives away. By the second week of August there is always a paper grocery bag out there with four squash the size of my forearm in it, and no note, because what would it even say.
So I make sour cream zucchini bread. A lot of it. And after somewhere north of a dozen loaves across two summers, I can tell you the sour cream is not a gimmick or a "chef's twist" - it's the fix for the actual problem with zucchini bread, which is that zucchini is basically a wet sponge and most recipes try to solve that by adding more flour. Which gives you a loaf that tastes like a scented candle.
The sour cream adds fat and a little acid. The fat keeps the crumb tender instead of tough. The acid gives the baking soda something to push against, so you get lift instead of a dense green brick. That's the whole mechanism.
Fair warning about the two loaves I ruined getting here - that's further down in What I Tested, and it's the part I'd actually read if I were you.
Why You'll Love This Recipe
One bowl, one whisk, no mixer. The oil-and-sugar batter comes together in about 8 minutes of actual hands-on time.
The sour cream keeps it tender for four full days on the counter — this is not a loaf that's only good the day you bake it.
It uses up a full pound of zucchini, which is one large squash or two normal ones.
The cinnamon sugar top gives you a crackly, caramelized crust so the loaf doesn't need frosting or glaze to feel like a treat.
Freezes beautifully in slices, so August you can feed October you.
Ingredients for Zucchini Bread with Sour Cream
For the bread
2 cups (240g) all-purpose flour - spoon and level it, don't scoop
2 tsp ground cinnamon
1 tsp baking soda
½ tsp baking powder
¾ tsp fine salt
¼ tsp ground nutmeg - optional, but it's what makes people ask what's in it
2 large eggs, room temperature
¾ cup granulated sugar
½ cup packed light brown sugar - this is where the moisture and the caramel note come from, don't swap it all to white
½ cup neutral oil (canola, vegetable, or light olive)
½ cup full-fat sour cream - see What I Tested before you reach for the light stuff
2 tsp vanilla extract
2 packed cups shredded zucchini, about 1 lb / 1 large squash, lightly squeezed
For the cinnamon sugar top
2 tbsp turbinado or coarse sugar - coarse holds its crunch, fine sugar dissolves into nothing
½ tsp ground cinnamon
How to Make Sour Cream Zucchini Bread
Heat the oven to 350°F. Grease a 9x5-inch loaf pan and line it with a parchment sling - two inches of overhang on the long sides so you can lift the loaf straight out.
Shred the zucchini on the large holes of a box grater. Don't peel it; the skin softens completely and the green flecks are the whole visual point. Pile it in a clean kitchen towel and squeeze once, gently - you want it to stop dripping, not to go dry. About ¼ cup of liquid should come out.
Whisk the flour, cinnamon, baking soda, baking powder, salt, and nutmeg in a medium bowl. Set aside.
In a large bowl, whisk the eggs, granulated sugar, and brown sugar for a full 45 seconds, until the mixture lightens and loosens and no longer looks grainy.
Whisk in the oil, sour cream, and vanilla until completely smooth with no white streaks of sour cream left.
Stir in the shredded zucchini.
Add the dry ingredients and fold with a spatula just until no dry flour is visible. Ten or twelve strokes. The batter should look thick and slightly lumpy. Overmixing here is what gives you tunnels and a tough crumb.
Scrape into the pan and smooth the top. Stir the turbinado and cinnamon together and scatter it evenly across the surface.
Bake 55 to 65 minutes. It's done when the top is deeply domed and cracked, the center springs back instead of jiggling, and a skewer in the middle comes out with a few damp crumbs but no wet batter. An instant-read thermometer in the center should hit 200–205°F.
Cool in the pan 15 minutes, then lift out by the parchment onto a rack and cool at least 45 minutes more before slicing.
Food Safety Note
This batter contains raw eggs and raw flour, and the FDA advises against eating either uncooked - flour is a real source of foodborne illness, not just the eggs. Don't taste the batter, and wash the bowl and your hands after mixing. Bake to an internal temperature of 200–205°F in the center of the loaf.
What I Tested
Low-fat sour cream ruined a loaf. I tried it on batch three assuming it would be fine, and the crumb came out gummy and slightly rubbery - the reduced-fat version carries more water and stabilizers, so you're adding liquid where you meant to add fat. Full-fat only. Full-fat plain Greek yogurt works as a swap; low-fat anything does not.
I squeezed the zucchini too hard on batch two. Wrung it out in a towel until it was practically dry, and got a loaf that was noticeably drier and needed butter to be worth eating. The zucchini's water is part of the recipe's liquid. One gentle squeeze, then stop.
I tried it at 375°F to save time. Bad trade. The cinnamon sugar top was over-caramelized and bordering on burnt by the time the center hit temperature. 350°F and the full hour is the move.
I tested the whole thing at Aldi prices in July 2026 - the loaf runs about $3.40 to make, and roughly a third of that is the sour cream.
Variations and Swaps
Chocolate chip sour cream zucchini bread - fold in 1 cup semisweet chips with the zucchini. Toss them in a tablespoon of the measured flour first so they don't all sink.
Lemon zucchini bread - add the zest of one lemon to the sugar and rub it in with your fingers before adding the eggs. Skip the nutmeg.
Dairy-free zucchini bread - swap the sour cream for an equal amount of unsweetened dairy-free plain yogurt or full-fat canned coconut milk. Coconut adds a faint coconut note; the yogurt is closer to neutral.
Zucchini bread muffins - divide into 14 to 16 lined muffin cups and bake 20 to 24 minutes at 350°F.
Walnut zucchini bread - 1 cup toasted chopped walnuts, folded in at the end. Toast them first or they'll taste like nothing.
Half whole wheat - swap 1 cup of the all-purpose for white whole wheat. It works; the loaf is a little denser and nuttier.
Tips For The Best Zucchini Bread
Weigh your flour if you own a scale. 240 grams. Scooping straight from the bag can pack in an extra 30 grams, which is the single most common reason a quick bread comes out dry.
Room temperature eggs and sour cream matter here. Cold sour cream doesn't emulsify into the oil, and you'll see it as little white specks in the batter that turn into dense pockets in the loaf.
Use a light-colored metal pan. Dark nonstick pans run hot and will set the crust before the center is done. If dark is what you have, drop the oven to 335°F and add ten minutes.
Tent with foil at the 40-minute mark if the top is browning faster than the middle is setting.
Wait the full hour to slice. Quick breads finish setting as they cool, and cutting hot gives you a center that reads as underbaked even when it isn't.
Serving Suggestions
Thick slice, toasted in a dry skillet cut-side down, with salted butter. This is the best way to eat it and it isn't close.
Warm with a scoop of vanilla ice cream for a two-minute dessert.
Alongside eggs and coffee for a summer breakfast that feels like more effort than it was. (→ internal link, breakfast slot)
Wrapped in parchment and twine as a neighbor gift, which is how you get more zucchini, which is how the cycle continues.
Storage, Reheating, and Freezing
Storage: Cool completely, then wrap tightly in plastic or store in an airtight container at room temperature for up to 4 days. Do not refrigerate a whole loaf — the fridge dries quick breads out fast and stales the crumb by day two.
Reheating: 15 to 20 seconds per slice in the microwave, or 4 to 5 minutes in a 300°F oven wrapped in foil. Toasting a slice in butter in a skillet is better than both.
Freezing: Freeze the whole cooled loaf, or slice it first and layer with parchment between slices — that way you can pull one at a time. Double-wrap in plastic, then foil or a freezer bag. Keeps 3 months. Thaw at room temperature 2 to 3 hours for a whole loaf, or microwave a frozen slice for 30 to 40 seconds.
Frequently Asked Questions
Do I have to squeeze the zucchini?
Yes, but gently - one light squeeze in a kitchen towel until it stops actively dripping. You should get about ¼ cup of liquid. Squeezing it bone-dry removes moisture the recipe is counting on and gives you a dry loaf. Skipping the squeeze entirely gives you a wet, sunken center.
Can I use Greek yogurt instead of sour cream?
Full-fat plain Greek yogurt substitutes 1:1 with very similar results - slightly tangier, slightly denser. Do not use low-fat or nonfat yogurt or low-fat sour cream. The reduced-fat versions carry extra water and stabilizers, and they produce a gummy, rubbery crumb rather than a tender one.
Why did my zucchini bread sink in the middle?
Three usual causes: underbaking, overmixing, or too much moisture from unsqueezed zucchini. Bake to 200–205°F internal rather than trusting the clock, fold the flour in only until it disappears, and give the zucchini one gentle squeeze. Opening the oven before the 45-minute mark also does it.
Do I need to peel the zucchini?
No. The skin is thin, it softens completely during baking, and it's what gives you the green flecks people expect to see. Just trim the ends and wash it. If you're using an oversized squash with a tough skin and big seeds, peel it and scrape the seeds out first.
Can I make this ahead?
Yes, and it's arguably better on day two - the crumb settles and the spices bloom. Bake it a day early, cool completely, and wrap tightly at room temperature. For further ahead, freeze the whole loaf up to 3 months and thaw on the counter the morning you need it.
Can I double this recipe?
Yes. The batter doubles cleanly into two 9x5 pans baked side by side with a few inches of air between them. Keep the temperature at 350°F and start checking at 55 minutes - the bake time barely changes, since you're baking two of the same loaf, not one bigger one.
If You Loved This, Try These Recipes
Easy Focaccia Bread- for another homemade bread recipe with a soft center and crisp edges.
Sourdough Discard Chocolate Chip Cookie Bars- for a soft, gooey baked treat made with simple pantry ingredients.
Salted Caramel Cheesecake- for another rich homemade bake that also uses sour cream for moisture and creaminess.
Moist Sour Cream Zucchini Bread
Sour cream zucchini bread with a tender, spiced crumb and a crackly cinnamon sugar top. One bowl, no mixer, and it uses up a full pound of zucchini.
Ingredients
For the bread
- 2 cups (240g) all-purpose flour, spooned and leveled
- 2 tsp ground cinnamon
- 1 tsp baking soda
- ½ tsp baking powder
- ¾ tsp fine salt
- ¼ tsp ground nutmeg (optional)
- 2 large eggs, room temperature
- ¾ cup granulated sugar
- ½ cup packed light brown sugar
- ½ cup neutral oil (canola, vegetable, or light olive)
- ½ cup full-fat sour cream, room temperature
- 2 tsp vanilla extract
- 2 packed cups shredded zucchini (about 1 lb), lightly squeezed
For the cinnamon sugar top
- 2 tbsp turbinado or coarse sugar
- ½ tsp ground cinnamon
Instructions
- Heat the oven to 350°F. Grease a 9x5-inch loaf pan and line it with a parchment sling, leaving 2 inches of overhang on the long sides.
- Shred the zucchini on the large holes of a box grater. Do not peel it. Pile it in a clean kitchen towel and squeeze once, gently, until it stops dripping. About ¼ cup of liquid should come out.
- Whisk the flour, cinnamon, baking soda, baking powder, salt, and nutmeg in a medium bowl. Set aside.
- In a large bowl, whisk the eggs, granulated sugar, and brown sugar for a full 45 seconds, until the mixture lightens and no longer looks grainy.
- Whisk in the oil, sour cream, and vanilla until completely smooth with no white streaks remaining.
- Stir in the shredded zucchini.
- Add the dry ingredients and fold with a spatula just until no dry flour is visible, about 10 to 12 strokes. The batter will look thick and slightly lumpy.
- Scrape into the pan and smooth the top. Stir the turbinado and cinnamon together and scatter evenly across the surface.
- Bake 55 to 65 minutes, until the top is deeply domed and cracked and a skewer in the center comes out with a few damp crumbs but no wet batter. Internal temperature should read 200–205°F.
- Cool in the pan 15 minutes, then lift out by the parchment onto a rack and cool at least 45 minutes more before slicing.
Food Safety Note
This batter contains raw eggs and raw flour. The FDA advises against consuming either uncooked. Do not taste the raw batter, and wash hands and equipment after mixing. Bake to an internal temperature of 200–205°F in the center of the loaf.
Notes
- Full-fat sour cream only. Low-fat and nonfat versions carry more water and produce a gummy crumb. Full-fat plain Greek yogurt is a 1:1 substitute.
- Squeeze gently. Wringing the zucchini dry removes moisture the recipe needs.
- Dark pans run hot. If using dark nonstick, drop to 335°F and add about 10 minutes.
- Tent with foil at the 40-minute mark if the top browns faster than the center sets.
- Muffins: divide into 14 to 16 lined cups and bake 20 to 24 minutes at 350°F.
Storage
Room temperature: airtight, up to 4 days. Do not refrigerate. Freezer: whole or sliced with parchment between slices, double-wrapped, up to 3 months. Thaw a whole loaf 2–3 hours at room temperature, or microwave a frozen slice 30–40 seconds.
Nutrition (per slice, 1 of 12)
Calories 285 · Fat 14g · Carbohydrates 38g · Sugar 21g · Protein 4g · Fiber 1g · Sodium 260mg
Nutrition information is an estimate calculated automatically and provided as a courtesy. Values will vary with brands and exact measurements.
