Four Ingredient Zucchini Spice Cake: Moist and Easy One Pan Dessert

Try this extra simple zucchini spice cake the next time you have more zucchini from the garden than you know what to do with!

Every August, when my kitchen counter disappears under a pile of zucchini, I pull out my trusty four ingredient zucchini spice cake. It’s the perfect follow-up to my 3-ingredient chocolate zucchini cake that I’ve been making for years, but with a cozy spice twist that signals late summer easing into fall. This cake comes together fast, uses just a few pantry basics, and somehow makes that mountain of garden squash feel like pure gold.

this …

I usually make a double batch because it disappears faster than I can slice it. The warm cinnamon, nutmeg, and ginger notes fill the house, and nobody ever guesses there’s a vegetable hiding inside. It’s moist, tender, and honestly tastes like something you’d get from a bakery case, minus all the fuss. Inspired by the simplicity of the classic four ingredient zucchini spice cake recipe, this version is my home kitchen riff. It’s fast, nearly foolproof, and endlessly adaptable.

If you’re staring down a bumper crop right now, try this. You’ll be amazed. The cake stays moist for up to 4 days at room temperature, making it wonderful for weekday snacks, potlucks, or a simple dessert after dinner. And because it bakes in one pan, cleanup is a breeze.

Ingredients Needed for the Zucchini Spice Cake

You only need four ingredients for this cake, and you likely have them already. Here’s the lineup:

No liquid is added to the batter. The moisture comes entirely from the shredded zucchini as it bakes. That’s the secret to that ultra-moist crumb without any oil or butter. If you prefer to skip the oil entirely, this is your kind of cake. Some recipes do include vegetable oil or melted butter, and you can certainly add 1/3 cup of neutral oil if you want a richer texture, but I find the cake stays beautifully moist without it. If your batter seems too thick and dry after mixing, you can add 1-2 tablespoons of water, but only if absolutely necessary.

Homemade cake mix shortcut: If you love the control of homemade but want the speed of a box, you can batch prep a dry mix: combine 2 1/4 cups all-purpose flour, 1 1/2 cups sugar, 2 teaspoons baking powder, 1/2 teaspoon baking soda, and 1/2 teaspoon salt. Store it in a jar and use 2 1/2 cups for this recipe along with the pumpkin spice. Do that on a quiet Sunday and you’ll be set for weeks of seasonal baking. The same goes for a homemade pumpkin spice blend: mix 3 tablespoons ground cinnamon, 2 teaspoons ground ginger, 2 teaspoons ground nutmeg, and 1 teaspoon ground allspice. Keep it in a small tin and use a heaping tablespoon whenever a recipe calls for it.

Making the Four Ingredient Zucchini Cake

Here’s how I make it, step by step. The whole thing takes about 10 minutes to stir together and then the oven does the rest.

1. Preheat and prepare your pan. Set the oven to 350°F (175°C). Spray a 9×13-inch sheet pan, two medium loaf pans, or a bundt pan with nonstick spray. A sheet pan gives you a classic snacking cake; loaves are great for sharing.
2. Mix everything in one bowl. Crack the eggs into a large mixing bowl and beat them lightly. Add the white cake mix, grated zucchini, and heaping tablespoon of pumpkin spice. Stir until just combined. The batter will be thick and might look a bit dry at first. Because there’s no added liquid, a stand mixer makes quick work of this step, but a sturdy spatula and some elbow grease will do the job too.
3. Watch for overmixing. Stir only until no dry streaks of cake mix remain. Overmixing after the zucchini is added can develop gluten from the flour in the mix and make your cake dense instead of tender. A few small lumps are fine.
4. Adjust consistency if needed. If the batter seems impossibly thick and won’t come together, add 1 tablespoon of water, but stop there. The zucchini releases moisture as it bakes, so you don’t want a runny batter.
5. Spread and bake. Pour the batter into your prepared pan and smooth the top. Bake until the top is lightly golden and a toothpick inserted in the center comes out clean or with a few moist crumbs. See the table below for timing by pan.
6. Cool completely. Let the cake rest in the pan for 10 minutes, then turn it out onto a cooling rack. This is important: wait until it’s fully cooled before adding any frosting. A warm cake will melt the frosting into a slide-off mess.

Choosing the right pan

You can bake this cake in almost any pan, but timing and texture vary a little. Here’s a quick guide:

Always test with a toothpick because oven temperatures and pan materials can shift bake times. The cake should spring back lightly when pressed.

Frosting or no frosting?

I usually serve this cake plain. The warm spices and natural sweetness from the cake mix stand perfectly on their own with a cup of coffee. But when I want a little something extra, I whip up a quick cream cheese frosting. Soften 4 ounces of cream cheese and 2 tablespoons of butter, then beat them with 1 cup of powdered sugar and a splash of vanilla until smooth. Spread it over the completely cooled cake. If cream cheese isn’t your thing, a simple buttercream is equally dreamy. Just remember the golden rule: never frost a warm cake.

Simple variations and add-ins

This batter is a blank canvas. Fold in any of these after mixing:

• 1/2 cup chopped walnuts or pecans for crunch
• 1/2 cup semi-sweet chocolate chips for a more dessert-forward cake
• A handful of raisins or dried cranberries for chewy sweetness

For a gluten-free version, use a certified gluten-free white cake mix and verify that your pumpkin spice and any add-ins are also gluten-free. The batter behaves exactly the same way. To make it vegan, reach for a plant-based white cake mix, replace the eggs with flax eggs (2 tablespoons ground flaxseed mixed with 5 tablespoons water, set for 5 minutes), and skip the oil. Some boxed cake mixes are already vegan by coincidence, so read the label.

Storage and make-ahead tips

This cake keeps beautifully. Cover it tightly and leave it on the counter for up to 4 days. In the fridge, it’ll stay fresh for up to a week. For longer storage, wrap the completely cooled, unfrosted cake in plastic wrap and then foil and freeze for up to 3 months. Defrost at room temperature and frost just before serving. I often bake two loaves, serve one fresh and freeze the other for a ready-made treat later.

A quick tip: Do not squeeze the liquid out of the zucchini unless a recipe specifically tells you to. The moisture is what keeps this cake pillow-soft for days. I grate mine with the fine side of a box grater, skin and all, and toss it straight into the bowl.

If you enjoy cake mix shortcuts as much as I do, you might also like my easy zucchini cake with cake mix for another super simple version. It’s the kind of recipe that proves you don’t need a long list of ingredients to bake something memorable.

Frequently Asked Questions

Zucchini Spice Cake

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

No reviews

Print Recipe

Pin Recipe

🧡 A moist, tender spice cake that uses only four pantry ingredients and turns garden zucchini into bakery-case gold.
☕ Perfect with coffee for a simple dessert, potluck, or afternoon snack — no oil needed and cleanup is a breeze.

• Total Time: 1 hour
• Yield: 12 servings 1x

Ingredients

Scale 1x2x3x

1 box (15.25 oz) white cake mix

2 cups loosely packed grated zucchini

2 large eggs

1 heaping tablespoon pumpkin spice

Cook Mode Prevent your screen from going dark

Instructions

1-Preheat and prepare your pan: Set oven to 350°F (175°C) and spray a 9×13-inch pan with nonstick spray.

2-Mix everything in one bowl: Beat eggs lightly, then add white cake mix, grated zucchini, and pumpkin spice; stir until just combined.

3-Watch for overmixing: Stir only until no dry streaks remain; a few lumps are fine to avoid a dense cake.

4-Adjust consistency if needed: If the batter is impossibly thick, add 1 tablespoon of water, but no more.

5-Spread and bake: Pour batter into prepared pan, smooth the top, and bake until golden and a toothpick inserted in the center comes out clean (about 50 minutes for a 9×13 pan).

6-Cool completely: Let cake rest in the pan for 10 minutes, then turn out onto a cooling rack and cool fully before adding any frosting.

Last Step:

Please leave a rating and comment letting us know how you liked this recipe! This helps our business to thrive and continue providing free, high-quality recipes for you.

Notes

🧁 Wait until the cake is fully cooled before frosting — a warm cake will melt cream cheese or buttercream into a messy puddle.
🥒 The zucchini provides all the moisture, so no oil or butter is needed; the batter will look thick but bakes up incredibly tender.
🍞 For gifting or freezing, bake in two 8×4-inch loaf pans; slice and freeze individual portions for quick snacks later.

• Author: Ruby Bennett
• Prep Time: 10 minutes
• Cooling: 30 minutes
• Cook Time: 50 minutes
• Category: Dessert
• Method: Baking
• Cuisine: American
• Diet: Vegetarian

Nutrition

• Serving Size: 1 slice (1/12 of cake)
• Calories: 175
• Sugar: 21g
• Sodium: 320mg
• Fat: 3g
• Saturated Fat: 1g
• Unsaturated Fat: 1.5g
• Trans Fat: 0g
• Carbohydrates: 35g
• Fiber: 1g
• Protein: 3g
• Cholesterol: 35mg