Lemon Zucchini Cake With Sweet Lemon Glaze tastes bright, moist, and tender with tiny green flecks that make it look as good as it tastes. It works perfectly for busy home bakers who want a bakery-style dessert in about 1 hour from start to finish. I baked a version of this cake for a neighbor once, and she “forgot” to return the pan for three weeks.

Why Lemon Zucchini Cake With Sweet Lemon Glaze Is Worth It

This cake gives you the soft crumb of a classic lemon loaf and the moisture of a pound cake, without feeling heavy. The zucchini melts into the batter, so you taste lemon sunshine and not “vegetable side dish.”

You mix the batter in one bowl with simple pantry staples, and the sweet lemon glaze comes together in minutes. The recipe works for brunch, potlucks, or a weeknight dessert that still feels special.

“Super moist, bright, and lemony with the prettiest glaze—no one guessed it had zucchini in it. ★★★★★”

Ingredients You Need

Dry ingredients

2 cups (240 g) all-purpose flour
1 ½ tsp baking powder
½ tsp baking soda
½ tsp fine sea salt
1 tbsp finely grated lemon zest (from 1–2 lemons)

You can use unbleached all-purpose flour or a standard store brand; both work well. Use fresh lemon zest, not the jarred stuff, because that zest carries most of the lemon flavor.

Wet ingredients

2 large eggs, room temperature
1 cup (200 g) granulated sugar
½ cup (120 ml) neutral oil (canola, vegetable, or light olive oil)
½ cup (120 g) plain Greek yogurt or sour cream
2 tbsp fresh lemon juice
1 tsp pure vanilla extract
1 ½ cups (about 180 g) finely grated zucchini, lightly packed

Greek yogurt adds tang and structure, while sour cream gives a slightly richer flavor. Use whichever you keep on hand; I rotate based on what sits in my fridge. Pat the zucchini dry just enough so it does not drip but still holds moisture.

Sweet Lemon Glaze

1 ½ cups (180 g) powdered sugar, sifted
2–3 tbsp fresh lemon juice
1–2 tsp milk or cream, as needed for texture
Pinch of fine sea salt
Extra lemon zest for topping (optional)

Use fresh lemon juice here as well; bottled juice tastes flat and slightly bitter. Add milk a teaspoon at a time so the glaze stays thick and glossy, not runny.

Equipment

9×5-inch loaf pan or 8-inch square baking pan
Parchment paper
Mixing bowls (one large, one medium)
Whisk and rubber spatula
Box grater or microplane for zucchini and zest
Cooling rack

Line the pan with parchment and leave an overhang so you lift the cake out easily. A simple whisk handles the batter; you do not need a stand mixer.

Quick Tips & substitutions

Squeeze the grated zucchini gently in a clean towel if it looks very wet, but keep some moisture for a tender crumb.
Use room-temperature eggs and yogurt so the batter mixes smoothly and bakes evenly.
Swap Greek yogurt with sour cream in equal amounts for a richer flavor.
Replace up to ½ cup of all-purpose flour with almond flour for a slightly denser, nutty cake.
Use light olive oil instead of butter to keep the cake extra moist and soft.
Stir in an extra tablespoon of lemon zest if you love bold citrus flavor.
If you only have regular yogurt, drain it for 10–15 minutes through a coffee filter to thicken it.
Use a glass or light-colored metal pan to avoid over-browning the edges.

How to Make Lemon Zucchini Cake With Sweet Lemon Glaze

Prep the pan and oven

Heat the oven to 350°F (175°C).
Line a 9×5-inch loaf pan with parchment, leaving a little overhang on the long sides.
Lightly oil or spray the parchment and exposed sides of the pan.

Prep the zucchini and lemons

Wash and dry the zucchini, then trim the ends.
Grate the zucchini on the fine side of a box grater.
Spread the grated zucchini on a clean towel and pat or gently squeeze to remove excess water.
Zest the lemons first, then juice them; measure out 1 tbsp zest and 2 tbsp juice for the batter.

Mix the dry ingredients

In a medium bowl, whisk together flour, baking powder, baking soda, salt, and lemon zest.
Break up any clumps of zest with your fingers so it distributes evenly in the flour.
Set the bowl aside near your mixing station.

Mix the wet ingredients

In a large bowl, whisk the eggs and sugar until the mixture looks pale and slightly thick.
Add the oil, yogurt (or sour cream), lemon juice, and vanilla.
Whisk until the mixture looks smooth and creamy with no streaks.

Combine batter and fold in zucchini

Add the dry ingredients to the wet ingredients in two additions.
Gently fold with a spatula until you no longer see dry flour; avoid over-mixing.
Add the grated zucchini and fold until it spreads evenly through the batter.
The batter will look thick but scoopable and slightly speckled with green.

Bake the cake

Scrape the batter into the prepared pan and smooth the top with a spatula.
Tap the pan gently on the counter to release any large air bubbles.
Bake on the center rack for 45–55 minutes, until a toothpick in the center comes out clean or with a few moist crumbs.
If the top browns too quickly, tent a piece of foil loosely over the pan during the last 10 minutes.

Cool the cake

Place the pan on a cooling rack and let the cake cool in the pan for 10–15 minutes.
Use the parchment overhang to lift the cake out of the pan.
Set the cake on the rack and let it cool completely before glazing.
If you glaze while warm, the glaze will soak in more and look thinner, which still tastes great.

Mix the sweet lemon glaze

In a medium bowl, whisk the powdered sugar, 2 tbsp lemon juice, and a pinch of salt.
Add milk or cream, 1 teaspoon at a time, until the glaze flows slowly off the whisk in thick ribbons.
Taste and adjust with a bit more lemon juice if you want extra tang.

Glaze and finish

Place the cooled cake on the rack with a tray or parchment underneath to catch drips.
Pour or spoon the glaze over the top, letting it drip down the sides.
Sprinkle extra lemon zest on top while the glaze still feels wet.
Let the glaze set for at least 20–30 minutes, then slice with a sharp knife and serve.

Recipe Variations

Gluten-free: Use a 1:1 gluten-free baking flour blend and add an extra tablespoon of yogurt for moisture.
Dairy-free: Use dairy-free yogurt and plant-based milk in the glaze; the rest of the ingredients already work without dairy.
Vegan: Swap eggs with 2 flax “eggs” (2 tbsp ground flax + 5 tbsp water, rested 5–10 minutes) and use dairy-free yogurt.
Low sugar: Cut sugar to ¾ cup in the batter and use a thinner drizzle of glaze instead of a full coating.
Add-ins: Fold in ½–¾ cup mini chocolate chips, blueberries, or chopped toasted nuts.
Extra lemon: Add another tablespoon of zest and a teaspoon of lemon extract for a stronger citrus punch.

Ways to Serve Lemon Zucchini Cake With Sweet Lemon Glaze

Serve slices slightly warm with a scoop of vanilla ice cream.
Pair a slice with hot coffee or strong black tea for an afternoon snack.
Cut into cubes and layer with whipped cream and berries for a quick trifle-style dessert.
Pack slices in lunchboxes as a sweet surprise that still sneaks in a vegetable.
Toast a slice lightly in a skillet with a tiny bit of butter for a caramelized edge.

Storage Success

Store leftover Lemon Zucchini Cake With Sweet Lemon Glaze in an airtight container at room temperature for up to 3 days. The glaze keeps the top moist, so place parchment between slices if you stack them. For longer storage, wrap the unglazed cake tightly and freeze it for up to 2 months, then thaw and glaze before serving. Chill glazed leftovers in the fridge if your kitchen runs warm, and bring slices back to room temperature before you eat them.