Name: Lemon Zucchini Cake With Sweet Lemon Glaze
Prep time: 20 min
Cook time: 35 min
Total time: 55 min
Ingredients: 2 1/2 cups all-purpose flour; 2 teaspoons baking powder; 1/2 teaspoon baking soda; 1/2 teaspoon fine sea salt; 1 1/2 cups granulated sugar; 3 large eggs; 3/4 cup neutral oil (canola, vegetable, or light olive oil); 3/4 cup plain Greek yogurt or buttermilk; 2 teaspoons pure vanilla extract; 2 tablespoons fresh lemon zest; 1/4 cup fresh lemon juice; 2 cups shredded zucchini, patted dry; 1 1/2 cups powdered sugar, sifted; 2–3 tablespoons fresh lemon juice; 1 teaspoon lemon zest; 1–2 teaspoons milk or cream, as needed to thin

Lemon Zucchini Cake With Sweet Lemon Glaze tastes bright, tender, and moist, with a sunny citrus punch that keeps you going back for “just one more slice.” It works perfectly for bakers who want an easy, impressive dessert that uses simple ingredients and takes about 1 hour start to finish. I first baked this on a hot July afternoon with way too much garden zucchini, and my family still asks for it every summer.

Why Lemon Zucchini Cake With Sweet Lemon Glaze Is Worth It

This cake hits that sweet spot between dessert and snack, with a soft crumb that stays moist for days thanks to the shredded zucchini. The lemon flavor runs through both the batter and the glaze, so every bite tastes bright and fresh instead of heavy.

You mix the batter in one bowl, pour it into a simple pan, and drizzle the sweet lemon glaze right over the cooled cake. The recipe works well for brunch, potlucks, or weeknight dessert, and it travels like a champ.

“Super moist, full of lemon flavor, and nobody guessed it had zucchini in it until I told them—new family favorite! ★★★★★”

Ingredients You Need

Dry ingredients

All-purpose flour – standard unbleached flour works best; I like King Arthur or Gold Medal.
Baking powder – gives the cake lift and a soft crumb.
Baking soda – helps browning and tenderness, especially with the yogurt or buttermilk.
Fine sea salt – sharpens the lemon flavor and balances sweetness.

Wet ingredients

Granulated sugar – keeps the crumb light; use regular white sugar.
Large eggs – room temperature eggs mix more easily and trap more air.
Neutral oil (canola, vegetable, or light olive oil) – oil keeps the cake extra moist and tender.
Plain Greek yogurt or buttermilk – adds tang and moisture; whole milk versions taste best.
Pure vanilla extract – rounds out the lemon and adds bakery-style flavor.

Lemon and zucchini

Fresh lemons – you need both zest and juice; Meyer lemons taste great, but regular lemons work perfectly.
Fresh zucchini – choose small to medium zucchini with thin skin; large seedy ones hold more water and need extra draining.

Sweet lemon glaze

Powdered sugar – sift it for a smooth glaze without lumps.
Fresh lemon juice – use the same lemons you zested for the cake.
Lemon zest – optional but adds extra citrus punch and pretty yellow flecks.
A splash of milk or cream – thins the glaze if needed.

Pantry shortcuts and notes

Use bottled lemon juice only in the glaze if you must, but fresh juice and zest in the batter make a big difference.
Use pre-shredded zucchini only if it looks fresh and moist; dry shreds need a spoonful more yogurt.
Nonstick baking spray with flour saves time and helps the cake release cleanly.

Equipment list

9×13-inch baking pan or two 8-inch round cake pans
Box grater or food processor with shredding disc for the zucchini
Large mixing bowl and medium mixing bowl
Whisk and rubber spatula
Microplane or fine grater for lemon zest
Cooling rack
Small bowl and spoon for the glaze

Quick Tips & substitutions

Pat the shredded zucchini dry with a clean kitchen towel to avoid a soggy cake.
Use half oil and half melted butter if you want a slightly richer flavor with the same moisture.
Swap Greek yogurt with sour cream or buttermilk in equal amounts.
Use a gluten-free 1:1 baking flour blend if you bake without wheat; keep the same measurements.
Add extra lemon zest if you love strong lemon flavor; reduce it slightly for kids who prefer milder citrus.
Line the pan with parchment over a light coat of spray for easy lifting and clean slices.
Let the cake cool completely before you pour on the sweet lemon glaze so it sets instead of soaking in.
Whisk the glaze thick enough to cling to a spoon; thin it with tiny splashes of lemon juice or milk.

How to Make Lemon Zucchini Cake With Sweet Lemon Glaze

Step 1: Prep the pan, lemons, and zucchini

Preheat the oven to 350°F (175°C) and grease a 9×13-inch pan, then line it with parchment. Wash the zucchini, trim the ends, and grate it on the medium holes of a box grater. Spread the shreds on a clean towel, sprinkle a pinch of salt, and gently squeeze out excess moisture without wringing them dry. Zest the lemons first, then juice them and set both aside.

Step 2: Mix the dry ingredients

In a medium bowl, whisk together the flour, baking powder, baking soda, and salt. Break up any flour clumps so the leavening spreads evenly. Set the bowl aside near your mixing area so you can add it in stages.

Step 3: Whisk the wet ingredients

In a large bowl, whisk the sugar, eggs, and oil until the mixture looks thick, pale, and slightly glossy. Add the yogurt, vanilla, lemon zest, and lemon juice, then whisk again until the batter looks smooth. You should see tiny flecks of zest throughout the mixture.

Step 4: Combine batter and fold in zucchini

Sprinkle the dry ingredients over the wet mixture in two additions, and whisk gently just until no dry streaks remain. Switch to a spatula and fold in the shredded zucchini, distributing it evenly without overmixing. The batter will look thick but pourable, with visible green shreds.

Step 5: Bake the cake

Pour the batter into the prepared pan and smooth the top with a spatula. Tap the pan gently on the counter to pop any large air bubbles. Slide the pan into the oven and bake 28–35 minutes, until the top looks golden and a toothpick in the center comes out with a few moist crumbs.

Step 6: Cool completely

Place the pan on a cooling rack and let the cake cool in the pan. This cake slices more cleanly and holds the glaze better when completely cool. Use this time to wash dishes and whisk the glaze so you can drizzle as soon as the cake reaches room temperature.

Step 7: Mix the sweet lemon glaze

In a small bowl, whisk powdered sugar with lemon juice and a pinch of zest. Start with less juice than you think you need, then add drops until the glaze flows slowly off the spoon in a thick ribbon. If it turns too thin, add a spoonful of powdered sugar and whisk again.

Step 8: Glaze and slice

Once the cake cools, drizzle the sweet lemon glaze over the top in zigzags or spread it gently with an offset spatula. Let the glaze set for 15–20 minutes so it forms a soft, shiny layer. Slice into squares and serve, or chill the pan briefly if you want super clean edges.

Recipe Variations

Gluten-free: Use a 1:1 gluten-free baking flour blend and add an extra tablespoon of yogurt if the batter looks thick.
Dairy-free: Swap yogurt with a thick coconut yogurt and use plant milk in the glaze instead of cream.
Egg-free: Use flax eggs (1 tablespoon ground flax + 3 tablespoons water per egg) and let the mixture thicken before mixing.
Extra lemon: Add more zest and a teaspoon of lemon extract to the batter for a stronger citrus hit.
Poppy seed twist: Stir 2 tablespoons poppy seeds into the batter for texture and a bakery-style look.
Nutty version: Fold in ½ cup finely chopped toasted walnuts or almonds.
Mini loaves or muffins: Bake the batter in greased muffin tins or mini loaf pans and shorten the bake time to about 18–22 minutes.

Ways to Serve Lemon Zucchini Cake With Sweet Lemon Glaze

Serve slightly chilled with fresh berries on the side.
Add a spoonful of vanilla or lemon yogurt on top for a brunch-style plate.
Pack slices in lunchboxes as a sweet afternoon treat.
Cut into small squares and serve on a dessert platter with other bar cookies.
Enjoy a warm slice with hot coffee, tea, or iced tea.

Storage Success

Store leftover Lemon Zucchini Cake With Sweet Lemon Glaze tightly covered at room temperature for up to 2 days. Move it to the fridge after that, where it keeps well for another 3–4 days and tastes great cold. Wrap individual slices in plastic or place parchment between pieces so they do not stick. Freeze slices in an airtight container for up to 2 months, then thaw at room temperature and add a fresh drizzle of glaze if you want extra shine.