Mouthwatering Cinnamon Swirl Zucchini Bread

I’ll be honest—I used to think zucchini belonged strictly in savory dishes until I tried this cinnamon swirl zucchini bread and completely changed my mind. The combination of finely shredded zucchini (which keeps the bread incredibly moist) and a generous swirl of cinnamon sugar throughout makes this loaf disappear faster than I can bake it. It’s become my go-to recipe for using up summer zucchini, and I love that it tastes like a treat while sneaking in some veggies!

Estimated Nutrition

Estimated nutrition for the whole recipe (without optional ingredients):

• Calories: 1650-1800
• Protein: 22-26 g
• Fat: 48-55 g
• Carbohydrates: 295-320 g

Ingredients

For the bread:

• 1 1/2 cups zucchini (finely shredded and squeezed dry with a paper towel)
• 3/4 cup sugar
• 1/4 cup oil (I use Wesson vegetable oil for a neutral flavor)
• 1 1/2 tsp vanilla
• 2 eggs (room temperature, about 70°F, for better emulsion)
• 1 1/2 cups flour (I always use King Arthur all-purpose flour)
• 1 tsp baking soda
• 1/2 tsp ground cinnamon
• 1/8 tsp ground nutmeg
• 1/2 tsp salt
• 1/4 tsp baking powder

For the swirl:

• 2 tbsp granulated sugar
• 2 tbsp brown sugar
• 1 tbsp ground cinnamon (freshly opened for the most vibrant aroma)

Step 1: Prepare the Pan and Oven

Preheat your oven to 350°F.

While it heats, grease a 9x5 inch loaf pan with oil or cooking spray, making sure to coat the bottom and all sides evenly.

This prevents sticking and ensures even browning on the sides.

Step 2: Create the Wet Ingredient Base

• 1 1/2 cups zucchini
• 3/4 cup sugar
• 1/4 cup oil
• 1 1/2 tsp vanilla
• 2 eggs

In a medium bowl, whisk together the shredded zucchini (make sure it's squeezed very dry with a paper towel—excess moisture will make the bread dense), sugar, oil, and vanilla until well combined.

Add the room temperature eggs one at a time, whisking thoroughly after each addition to create a smooth emulsion.

I always use room temperature eggs here because they blend more smoothly into the mixture, creating a better texture in the final bread.

Step 3: Mix the Dry Ingredients

• 1 1/2 cups flour
• 1 tsp baking soda
• 1/2 tsp ground cinnamon
• 1/8 tsp ground nutmeg
• 1/2 tsp salt
• 1/4 tsp baking powder

In a separate bowl, whisk together the flour, baking soda, 1/2 teaspoon cinnamon, nutmeg, salt, and baking powder until evenly distributed.

This combines the leavening agents and spices throughout the flour so you get consistent flavor in every bite.

Step 4: Combine Wet and Dry Ingredients

• wet ingredient mixture from Step 2
• dry ingredient mixture from Step 3

Pour the dry ingredient mixture from Step 3 into the wet mixture from Step 2, and fold gently with a spatula until just combined—the batter should look slightly lumpy.

Overmixing develops gluten and makes the bread tough, so stop as soon as you don't see streaks of dry flour.

Step 5: Prepare the Cinnamon Swirl

• 2 tbsp granulated sugar
• 2 tbsp brown sugar
• 1 tbsp ground cinnamon

In a small bowl, mix together the 2 tablespoons granulated sugar, 2 tablespoons brown sugar, and 1 tablespoon ground cinnamon.

I always use freshly opened cinnamon for this swirl because the aroma is so much more vibrant—stale cinnamon loses its punch.

Set aside.

Step 6: Layer the Batter and Swirl

• batter from Step 4
• cinnamon-sugar mixture from Step 5

Pour about 1/3 of the batter from Step 4 into your prepared pan, spreading it evenly to cover the bottom.

Sprinkle half of the cinnamon-sugar mixture from Step 5 over the batter.

Pour another 1/3 of the batter on top, then sprinkle the remaining cinnamon-sugar mixture.

Finally, pour the last 1/3 of batter over everything, smoothing the top gently.

You can swirl everything together with a knife if you'd like a marbled effect, or leave the layers distinct—both work beautifully.

Step 7: Bake and Cool

Bake in your preheated 350°F oven for 35-45 minutes, until a toothpick inserted into the center comes out clean or with just a few moist crumbs.

The top should be golden brown.

Remove from the oven and let the bread cool in the pan for 10 minutes, then turn it out onto a wire rack to cool completely before slicing.

Mouthwatering Cinnamon Swirl Zucchini Bread

Delicious Mouthwatering Cinnamon Swirl Zucchini Bread recipe with step-by-step instructions.

Print Recipe Pin Recipe

Prep Time 20 minutes mins

Cook Time 35 minutes mins

Total Time 57 minutes mins

Servings: 10 slices

Calories: 1725

Ingredients Method

Ingredients

  

For the bread

• 1 1/2 cups zucchini (finely shredded and squeezed dry with a paper towel)
• 3/4 cup sugar
• 1/4 cup oil (I use Wesson vegetable oil for a neutral flavor)
• 1 1/2 tsp vanilla
• 2 eggs (room temperature, about 70°F, for better emulsion)
• 1 1/2 cups flour (I always use King Arthur all-purpose flour)
• 1 tsp baking soda
• 1/2 tsp ground cinnamon
• 1/8 tsp ground nutmeg
• 1/2 tsp salt
• 1/4 tsp baking powder

For the swirl

• 2 tbsp granulated sugar
• 2 tbsp brown sugar
• 1 tbsp ground cinnamon (freshly opened for the most vibrant aroma)

Method

 

1. Preheat your oven to 350°F. While it heats, grease a 9x5 inch loaf pan with oil or cooking spray, making sure to coat the bottom and all sides evenly. This prevents sticking and ensures even browning on the sides.
2. In a medium bowl, whisk together the shredded zucchini (make sure it's squeezed very dry with a paper towel—excess moisture will make the bread dense), sugar, oil, and vanilla until well combined. Add the room temperature eggs one at a time, whisking thoroughly after each addition to create a smooth emulsion. I always use room temperature eggs here because they blend more smoothly into the mixture, creating a better texture in the final bread.
3. In a separate bowl, whisk together the flour, baking soda, 1/2 teaspoon cinnamon, nutmeg, salt, and baking powder until evenly distributed. This combines the leavening agents and spices throughout the flour so you get consistent flavor in every bite.
4. Pour the dry ingredient mixture from Step 3 into the wet mixture from Step 2, and fold gently with a spatula until just combined—the batter should look slightly lumpy. Overmixing develops gluten and makes the bread tough, so stop as soon as you don't see streaks of dry flour.
5. In a small bowl, mix together the 2 tablespoons granulated sugar, 2 tablespoons brown sugar, and 1 tablespoon ground cinnamon. I always use freshly opened cinnamon for this swirl because the aroma is so much more vibrant—stale cinnamon loses its punch. Set aside.
6. Pour about 1/3 of the batter from Step 4 into your prepared pan, spreading it evenly to cover the bottom. Sprinkle half of the cinnamon-sugar mixture from Step 5 over the batter. Pour another 1/3 of the batter on top, then sprinkle the remaining cinnamon-sugar mixture. Finally, pour the last 1/3 of batter over everything, smoothing the top gently. You can swirl everything together with a knife if you'd like a marbled effect, or leave the layers distinct—both work beautifully.
7. Bake in your preheated 350°F oven for 35-45 minutes, until a toothpick inserted into the center comes out clean or with just a few moist crumbs. The top should be golden brown. Remove from the oven and let the bread cool in the pan for 10 minutes, then turn it out onto a wire rack to cool completely before slicing.