Snickerdoodle Zucchini Bread with Cinnamon Sugar Crust

This Snickerdoodle Zucchini Bread takes everything you love about the cookie—a tender, tangy crumb and a crackly cinnamon-sugar crust—and bakes it into a moist zucchini loaf. It’s an easy, one-bowl quick bread that makes the most of summer squash.

The top gets that signature snickerdoodle crunch, while the inside stays soft with flecks of green zucchini. It’s just sweet enough for breakfast or an afternoon snack.

Why This Snickerdoodle Loaf Works

I love how the cream of tartar gives the bread a subtle tang that balances the sweetness, just like the cookies. And that cinnamon-sugar crust? It crackles under your fork and keeps the board crisp until the last slice.

This loaf is sturdy enough to pack in a lunchbox but tender enough to eat with just a pat of butter.

Ingredients

• 1 ¾ cups (220g) all-purpose flour: spooned and leveled, not scooped
• 1 tsp baking powder
• ½ tsp baking soda
• ½ tsp cream of tartar: this gives the signature snickerdoodle tang
• ½ tsp salt
• 1 tsp ground cinnamon
• ¼ tsp ground nutmeg: optional, but adds warmth
• ⅔ cup (135g) granulated sugar
• ½ cup (120ml) neutral oil or melted butter: oil keeps it moist longer
• 2 large eggs, room temperature
• 1 tsp vanilla extract
• 1 cup (240g) plain Greek yogurt or buttermilk: for tang and tenderness
• 1 ½ cups (180g) grated zucchini, squeezed dry: about 1 medium zucchini
• For the topping: 2 tbsp granulated sugar + 1 tsp cinnamon

Variations and Substitutions

• Oil vs. butter: melted butter adds richer flavor, but oil yields a more tender crumb that stays soft for days.
• Yogurt swap: full-fat sour cream or buttermilk work just as well, though buttermilk may need an extra tablespoon of flour if the batter looks thin.
• Gluten-free: use a 1:1 gluten-free flour blend and check that it already contains xanthan gum.
• Squash swap: shredded summer squash or pattypan can replace the zucchini cup for cup—just squeeze it just as dry.

If you like this, try my Classic Zucchini Bread or Pumpkin Bread with cinnamon swirl.

How To Make Snickerdoodle Zucchini Bread

Step 1: Whisk the Dry Ingredients

Preheat the oven to 350°F (175°C) with a rack in the middle. Grease a 9×5-inch loaf pan and line it with parchment so the ends overhang for easy lifting. In a large bowl, whisk together the 1 ¾ cups flour, baking powder, baking soda, cream of tartar, salt, cinnamon, and nutmeg until well blended.

The mixture should smell warmly of cinnamon with a faint tang from the cream of tartar. Give it a stir if you spot any clumps of baking powder.

Step 2: Mix the Wet Base

In the same bowl—no need for a second one if you mixed the dry ingredients there first—crack in the 2 eggs, then add the ⅔ cup sugar, ½ cup oil, 1 tsp vanilla, and the 1 cup yogurt or buttermilk. Whisk until you get a smooth, glossy batter with no streaks of egg white.

At this point the batter will be thick but pourable, the color turning pale from the sugar and yogurt.

Step 3: Fold in the Zucchini

Add the 1 ½ cups of squeezed zucchini. Use a flexible spatula to fold it in gently, working just until the green shreds are evenly distributed. The batter should become speckled and slightly looser, but still hold its shape on the spatula.

Keep an eye on the batter: if it looks watery, you may not have squeezed the zucchini enough. A quick extra pat with paper towels can fix that before you pour.

Step 4: Pour into the Pan and Top

Scrape all the batter into the prepared loaf pan and smooth the top with the spatula. In a small bowl, mix the 2 tablespoons sugar with the 1 teaspoon cinnamon, then sprinkle it evenly over the batter. Don’t skimp—the whole surface should be covered in a thin, sparkly layer.

The sugar topping will melt into a crackly crust as it bakes, so you want that even coverage across every future slice.

Step 5: Bake the Loaf

Slide the pan into the oven and bake for 50 to 60 minutes. The top should be deeply golden and the house will smell like a cinnamon-sugar bakery. Start checking at 50 minutes with a toothpick inserted into the center—if it comes out with just a few moist crumbs, and the internal temperature reads 200-205°F (93-96°C), it’s done.

If the crust browns too quickly before the center sets, tent the pan loosely with foil after about 40 minutes and keep baking.

Step 6: Turn Out and Slice

Let the loaf cool in the pan on a wire rack for 15 minutes. Grab the parchment overhang and lift it out, then set the loaf on the rack to cool another 15 minutes. Slice while still warm—the crust will crackle as the knife goes through—and serve.

The crumb should be tender with tiny green flecks and a soft cinnamon fragrance from that sugary cap.

A Few Tips Before You Start

• Squeeze the grated zucchini hard in a clean kitchen towel or layered paper towels. Any extra moisture will steam the bread and leave a gummy streak in the center.
• Granulated sugar makes the best crackly top; avoid brown sugar here because it melts into a softer, less snappy crust.
• The toothpick test is reliable, but an instant-read thermometer removes all guesswork. Look for 200-205°F (93-96°C) in the middle of the loaf.
• Let the loaf cool completely before wrapping if you plan to store it—trapped heat turns the crust sticky.

Bake times by pan size (all at 350°F/175°C, until 200-205°F (93-96°C) internal):

Keeping the Loaf Fresh

• Refrigerate: wrap tightly and store in the fridge for up to 5 days. The texture stays moist, but the crust will soften a little.
• Reheating: a quick toast in a toaster oven or a 10-second zap in the microwave brings back that just-baked warmth.
• Freezing: wrap the fully cooled loaf in plastic then foil and freeze up to 2 months. Thaw overnight on the counter, then slice and toast.

Frequently Asked Questions

Can I use frozen zucchini?

Yes, thaw it completely, then squeeze out every last bit of liquid. Frozen zucchini releases more water than fresh, so really press it dry before adding.

What can I substitute for cream of tartar?

You can leave it out; the bread will still taste like a cinnamon-sugar loaf but lose that subtle tang. For a similar zing, use buttermilk instead of yogurt.

My loaf sank in the middle—what went wrong?

That usually means the center was underbaked. Ovens vary, so trust the internal temperature or toothpick more than the timer, and avoid opening the door until the last 10 minutes of baking.

Can I make these into muffins?

Absolutely. Divide the batter into a greased 12-cup muffin tin, top each with the cinnamon sugar, and bake at 350°F (175°C) for 18-22 minutes.

Snickerdoodle Zucchini Bread Recipe

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 55 minutes mins

Total Time 1 hour hr 10 minutes mins

Servings: 10 servings

Calories: 220

Ingredients Method Notes

Ingredients

  

• 1 ¾ cups (220g) all-purpose flour
• 1 tsp baking powder
• ½ tsp baking soda
• ½ tsp cream of tartar
• ½ tsp salt
• 1 tsp ground cinnamon
• ¼ tsp ground nutmeg
• ⅔ cup (135g) granulated sugar
• ½ cup (120ml) neutral oil or melted butter
• 2 large eggs, room temperature
• 1 tsp vanilla extract
• 1 cup (240g) plain Greek yogurt or buttermilk
• 1 ½ cups (180g) grated zucchini, squeezed dry
• For the topping: 2 tbsp granulated sugar + 1 tsp cinnamon

Method

 

1. Preheat the oven to 350°F (175°C). Grease a 9×5-inch loaf pan and line with parchment. Whisk together the flour, baking powder, baking soda, cream of tartar, salt, cinnamon, and nutmeg.
2. Add the eggs, sugar, oil, vanilla, and yogurt to the dry ingredients. Whisk until smooth.
3. Fold in the squeezed zucchini just until evenly distributed.
4. Scrape the batter into the pan, smooth the top, then sprinkle the combined cinnamon sugar topping evenly over the batter.
5. Bake 50-60 minutes, until a toothpick comes out with just moist crumbs and the internal temperature hits 200-205°F (93-96°C). Tent with foil if the top browns too quickly.
6. Cool in the pan 15 minutes, lift out using the parchment, and cool another 15 minutes on a rack. Slice and serve warm or at room temperature.

Notes

Cool the loaf completely before wrapping for the cleanest slices and to keep the cinnamon-sugar crust crisp overnight.