The best healthy zucchini banana bread — lightly sweet, perfectly moist, and full of banana flavor. This loaf is packed with grated zucchini and overripe bananas and uses no added refined sugar. It’s simple to make, naturally tender, and works well as a snack or breakfast.
I’ve been making a no-added-sugar banana bread for years, and it’s a regular in our house — an easy bedtime snack or a no-fuss breakfast. One day I spotted a lonely zucchini in the crisper and decided to add it to the routine. My first attempts were wet and disappointing, but after adjusting the banana amount, increasing the leavening, and squeezing excess moisture from the zucchini, I landed on a reliable version the whole family loved.
This loaf is sweetened only with bananas. If you choose to add mix-ins like chocolate chips or nuts, be aware those will add sugar or calories, but they’re optional. When I skip chips, a quick honey butter (honey whipped with butter) is a delicious topping. Even plain, the bread is satisfying and moist.
Ingredients for Healthy Zucchini Banana Bread
Here’s what you need to make this zucchini banana bread:
- Overripe mashed banana: The browner the bananas, the sweeter the loaf. Fresh or frozen and thawed both work; if using frozen, let them come fully to room temperature and keep any liquid from thawing.
- Grated zucchini: Squeeze out excess moisture before adding to the batter to avoid a soggy loaf.
- Egg: One large egg. To make it vegan, substitute a flax egg.
- Oil: A neutral or mild-flavored oil such as avocado, vegetable, or melted coconut oil.
- Cinnamon, baking powder, vanilla, and kosher salt.
- Flour: White whole wheat works well; you can also use a 50/50 mix of all-purpose and whole wheat flour or 100% all-purpose if preferred.
- Optional mix-ins: Chocolate chips, nuts, or raisins.
Tips for perfect zucchini banana bread
Weigh the bananas and zucchini if possible. Both ingredients contain a lot of moisture, and too much of either can yield a soggy loaf. Using a digital kitchen scale is the most accurate and mess-free way to measure these ingredients.
Use room-temperature bananas. If you use previously frozen bananas, make sure they are fully thawed and at room temperature. Cold batter can cause uneven baking, where the outside browns before the center cooks through.
Expect longer baking time with mix-ins. Adding chocolate chips, nuts, or other mix-ins can increase bake time slightly.
Test for doneness in several places. Dense quick breads can be deceptively underbaked in the center. Test with a toothpick or skewer in the center and a couple of spots nearer the ends; if batter sticks, bake a little longer and check again.
How to freeze banana bread
Banana bread freezes very well and is a great way to extend freshness. If your bananas are extremely ripe or you live in a warm, humid climate, the bread may only last a day or two at room temperature; freezing helps preserve it. Frozen banana bread stays best when eaten within 3–4 months.
- To freeze slices: Cool completely, cut into 1″ slices, wrap each slice tightly in foil or plastic wrap, and place in a freezer bag with as much air removed as possible. Pull out slices as needed for a quick breakfast.
- To freeze half or whole loaves: Cool completely, slice in half if desired, wrap tightly in foil, and place in a freezer bag or airtight container. Remove excess air before sealing.
How to thaw frozen banana bread
Thaw wrapped banana bread at room temperature. Plan for roughly 20 minutes per slice, about 2 hours for a half loaf, or 3–4 hours for a whole loaf. If short on time, use the microwave defrost setting, following your microwave’s instructions to avoid overheating.
Frequently Asked Questions
Yes. Using very ripe bananas provides natural sweetness. Overripe bananas contain more natural sugars and are ideal for baking.
Yes. Mixes of fresh and frozen thawed bananas work fine. Allow frozen bananas to fully thaw and come to room temperature before incorporating into the batter.
Popular choices are walnuts, raisins, or chocolate chips. If avoiding added sugar, choose sugar-free baking chips or cacao nibs. Remember that mix-ins may increase baking time.
Other quick breads and muffins you might like
- The original no-added-sugar banana bread is a straightforward alternative.
- Air fryer banana bread makes a quick, small-loaf version.
- Seasonal options like pumpkin banana bread offer a fall twist.
- Healthy chocolate chip banana muffins are a kid-friendly favorite.
Healthy No-Added-Sugar Zucchini Banana Bread
This loaf is loaded with fresh zucchini and overripe bananas and uses no refined sugar.
- Prep Time: 20 minutes
- Total Time: 85 minutes
- Makes: 12 slices
Ingredients
- 1 ½ cups (180 g) grated zucchini (about 1 medium), squeezed to remove excess liquid
- 1 ¾ cups (440 g) mashed overripe banana (approximately 4 medium)
- 2 tablespoons (30 g) melted coconut, avocado, or vegetable oil
- 1 large egg (or 1 flax egg for a vegan option)
- 1 teaspoon vanilla extract
- 2 cups (265 g) white whole wheat flour (or a 50/50 mix of all-purpose and whole wheat)
- 3 teaspoons (13 g) baking powder
- 1 teaspoon cinnamon
- ½ teaspoon kosher salt
- ½ cup chocolate chips, chopped nuts, or raisins (optional)
Instructions
- Preheat and prepare pans. Preheat the oven to 350°F (175°C). Lightly grease a 9×5-inch or 8½×4½-inch loaf pan, or use three mini loaf pans.
- Remove excess liquid from the zucchini. Squeeze the shredded zucchini firmly to remove as much water as possible and set aside.
- Mix dry ingredients. In a medium bowl, whisk together the flour, baking powder, cinnamon, and salt.
- Combine wet ingredients. In a large bowl, mix mashed bananas, oil, and the egg until combined. If you use a food scale and a blender, you can blend these ingredients smooth.
- Combine and add mix-ins. Stir the dry ingredients into the wet ingredients until just combined, then fold in the zucchini and any optional mix-ins. Do not overmix.
- Bake and cool. Pour batter into the prepared pan. Bake 60–70 minutes for a large loaf or 35–40 minutes for mini loaves, or until a toothpick inserted into the center and a couple of spots near the ends comes out clean. Allow the loaf to cool in the pan 10–15 minutes, then transfer to a wire rack to cool another 15–20 minutes before slicing.
- Store. Once cooled, wrap loosely in foil leaving a small vent so moisture can escape. The loaf keeps 1–2 days at room temperature or up to 5 days refrigerated. Freeze for longer storage.
Notes
Favorite equipment
- Digital food scale for precise, low-mess measuring
- A large loaf pan or mini loaf pans, depending on portion size
- Silicone brush for greasing pans
Ingredient notes
- Bananas: The browner, the better. If using frozen, thaw fully and bring to room temperature and retain any liquid.
- Egg: Substitute a flax egg to make the recipe vegan.
- Flour: If you don’t have white whole wheat, use a blend of all-purpose and whole wheat flour.
- Mix-ins: Mix-ins can increase the bake time. Chocolate chips will add sugar, so plan accordingly if you want to keep it no-added-sugar.
Ingredient prep
- Mash the bananas and refrigerate for up to 2 days if needed.
- Measure dry ingredients before mixing.
Little helpers
Involving kids is a great way to encourage adventurous eating. Toddlers can help peel and mash bananas and stir; older children can measure and pour batter.
Nutrition
Nutrition info based on a 3-ounce slice made with coconut oil; mix-ins not included.
Nutrition
- Serving Size: 3/4″ slice
- Calories: 137
- Sugar: 5 g
- Sodium: 209 mg
- Fat: 3 g
- Saturated Fat: 2 g
- Unsaturated Fat: 1 g
- Trans Fat: 0 g
- Carbohydrates: 25 g
- Fiber: 4 g
- Protein: 4 g
- Cholesterol: 15 mg
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Share a photo on Instagram and tag @modminimalism with #modernminimalism so I can see your loaf.
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