Imagine the warm aroma of cinnamon swirling around a golden, tender donut that sneaks a hidden vegetable inside. Cinnamon Sugar Zucchini Donuts turn a humble summer squash into a breakfast‑star that feels indulgent without the guilt.
What makes this recipe special is the clever use of grated zucchini, which adds moisture and a subtle sweetness while keeping the donuts light. The cinnamon‑sugar coating delivers that classic comfort‑food crunch you crave.
Kids, brunch‑loving adults, and anyone who enjoys a sweet start to the day will adore these treats. They shine on lazy weekend mornings, as a festive brunch addition, or even as a quick after‑school snack.
The process is straightforward: grate the zucchini, blend it into a spiced batter, pipe or spoon the mixture into a donut pan, bake until puffed, then toss in a cinnamon‑sugar glaze while still warm.
Why You'll Love This Recipe
Moisture‑Boosting Zucchini: Grated zucchini releases water that keeps each donut soft and tender, eliminating the dry texture common in many quick breads.
Simple, One‑Bowl Method: All ingredients combine in a single bowl, minimizing cleanup and making the recipe perfect for busy mornings.
Kid‑Approved Sweetness: The cinnamon‑sugar coating provides just enough sweetness to satisfy little palates without overwhelming them.
Versatile Serving Options: Serve warm with coffee, cool as a snack, or drizzle with glaze for a dessert‑style treat.
Ingredients
The success of these donuts hinges on a few key components. Fresh zucchini provides moisture and a faint vegetal note that balances the sweet glaze. Whole‑wheat flour adds a gentle nuttiness while keeping the crumb light. The cinnamon‑sugar coating delivers the classic comfort‑food flavor, and a touch of vanilla rounds everything out. Together they create a donut that feels both wholesome and indulgent.
Dry Base
- 1 ½ cups whole‑wheat flour
- ½ cup all‑purpose flour
- 2 teaspoons baking powder
- ¼ teaspoon baking soda
- ¼ teaspoon salt
Wet Mix
- 1 cup grated zucchini (about 1 medium)
- ½ cup plain Greek yogurt
- ¼ cup melted unsalted butter, cooled
- 2 large eggs, lightly beaten
- 1 teaspoon vanilla extract
Cinnamon‑Sugar Coating
- ¼ cup granulated sugar
- 2 teaspoons ground cinnamon
- Pinch of salt
These ingredients work together to produce a light, fluffy interior and a crisp, aromatic exterior. The yogurt adds a subtle tang that brightens the flavor, while the butter contributes richness without making the donuts heavy. The cinnamon‑sugar coating adheres best when the donuts are still warm, ensuring every bite is coated evenly.
Step-by-Step Instructions

Preparing the Zucchini
Start by washing a medium zucchini, then grate it using the large holes of a box grater. Place the grated zucchini in a clean kitchen towel, wrap it, and squeeze firmly to remove excess water. This step prevents a soggy batter and ensures the donuts stay airy.
Mixing the Batter
- Combine dry ingredients. In a large bowl whisk together the whole‑wheat flour, all‑purpose flour, baking powder, baking soda, and salt. This distributes leavening agents evenly, which is essential for uniform rise.
- Blend wet components. In a separate bowl, whisk the Greek yogurt, melted butter, eggs, vanilla, and the squeezed zucchini until smooth. The yogurt adds moisture while the butter contributes richness.
- Incorporate wet into dry. Pour the wet mixture into the dry ingredients and stir with a rubber spatula just until combined. Over‑mixing can develop gluten, leading to dense donuts, so stop when the batter is just moistened.
Baking
- Preheat and prep the pan. Heat your oven to 375°F (190°C). Lightly grease a 12‑cavity donut pan with butter or non‑stick spray; this helps the donuts release cleanly.
- Fill the pan. Using a medium‑sized cookie scoop or a spoon, fill each cavity about three‑quarters full. The batter will rise, so leaving space prevents overflow.
- Bake until golden. Place the pan on the middle rack and bake for 12‑15 minutes, or until a toothpick inserted into the side of a donut comes out clean and the tops are lightly golden.
- Cool briefly. Remove the pan from the oven and let the donuts sit for 2 minutes. Then gently pop them out onto a wire rack; this prevents them from steaming and losing crispness.
Cinnamon‑Sugar Glaze
While the donuts are still warm, combine the granulated sugar, cinnamon, and a pinch of salt in a shallow bowl. Toss each donut in the mixture until fully coated. The residual heat melts a thin layer of butter on the surface, helping the sugar adhere perfectly.
Tips & Tricks
Perfecting the Recipe
Dry the zucchini thoroughly. Excess moisture creates a gummy batter. Use a clean kitchen towel or cheesecloth to squeeze out as much liquid as possible before mixing.
Don’t over‑mix. Stir just until flour disappears. Over‑mixing develops gluten, which can make the donuts tough instead of tender.
Use a silicone donut pan. Silicone releases the donuts more easily and eliminates the need for extra greasing, preserving the coating.
Flavor Enhancements
Add a teaspoon of ground nutmeg or a splash of maple syrup to the batter for a deeper spice profile. For a citrus twist, grate a little orange zest into the cinnamon‑sugar coating.
Common Mistakes to Avoid
Skipping the cooling step after baking can cause the glaze to melt off rather than stick. Also, avoid using too much butter in the batter; it can make the donuts greasy instead of light.
Pro Tips
Room‑temperature ingredients. Allow the yogurt, eggs, and butter to come to room temperature before mixing; this creates a smoother batter and more even rise.
Test a single donut. Bake one donut first; if it’s too dense, add a tablespoon of milk to loosen the batter before filling the rest of the pan.
Finish with a butter glaze. Melt 2 tbsp butter, drizzle over the glazed donuts, and toss gently for an extra glossy finish.
Variations
Ingredient Swaps
Replace zucchini with grated carrots for a sweeter, orange‑hued donut, or use shredded apple for extra fruitiness. Swap whole‑wheat flour for oat flour to make the donuts gluten‑free (ensure the oat flour is certified). For a vegan version, substitute Greek yogurt with coconut yogurt and use a flax‑egg mixture.
Dietary Adjustments
To keep carbs low, replace half the flour with almond flour and use a sugar substitute like erythritol in the coating. For dairy‑free diners, use melted coconut oil instead of butter and choose a dairy‑free yogurt.
Serving Suggestions
Serve the donuts alongside a dollop of vanilla Greek yogurt or a drizzle of honey‑lemon glaze. Pair them with fresh berries for a light brunch plate, or stack two with a smear of almond butter for a protein‑packed snack.
Storage Info
Leftover Storage
Allow donuts to cool completely, then place them in an airtight container lined with a paper towel to absorb excess moisture. Refrigerate for up to 4 days. For longer keeping, freeze individually wrapped in plastic wrap and stored in a freezer bag for up to 3 months.
Reheating Instructions
Reheat frozen donuts by preheating the oven to 350°F (175°C) and baking for 8‑10 minutes, or until warmed through. For a quick microwave fix, heat a single donut on medium power for 30‑45 seconds, then toss again in cinnamon‑sugar to restore the crust.
Frequently Asked Questions
This guide gives you everything you need to master Cinnamon Sugar Zucchini Donuts—from ingredient selection to flawless baking and storage. The recipe is adaptable, quick, and perfect for any breakfast or brunch table. Feel free to experiment with the suggested swaps and make the donuts truly your own. Enjoy the warm, spiced delight with a cup of coffee or tea, and share the joy with friends and family!