Lemon Zucchini Cake With Sweet Lemon Glaze tastes bright, moist, and tender with a soft crumb that almost melts as you chew. It works perfectly for anyone who loves citrus desserts and needs a simple bake that comes together in about 1 hour from start to finish. I baked a version of this for my neighbor’s block party and watched people quietly go back for seconds like dessert ninjas.

Why Make This Lemon Zucchini Cake With Sweet Lemon Glaze at Home

You get a super moist lemon cake with a hint of zucchini that no one can detect, plus a thick, tangy sweet lemon glaze that sets on top. The flavor beats boxed mixes, and you control the ingredients, sweetness, and lemon intensity.

You also use up extra zucchini in a way that feels more fun than another stir fry. The recipe works for brunch, potlucks, or a simple weeknight dessert that tastes bakery level without bakery prices.

“This Lemon Zucchini Cake With Sweet Lemon Glaze tastes like a lemon loaf and a summer pound cake had the most perfect baby, and I would happily eat it every weekend. ★★★★★”

Ingredients You Need

Dry ingredients

All purpose flour: 2 cups, spooned and leveled
- Use a good quality unbleached flour for best texture.
Baking powder: 2 teaspoons
Baking soda: 1/2 teaspoon
Fine sea salt: 1/2 teaspoon
Optional: 1/2 teaspoon ground cardamom or ginger for a subtle twist

Wet ingredients

Large eggs: 2, at room temperature
Granulated sugar: 1 cup
Light brown sugar: 1/2 cup, packed
Neutral oil: 1/2 cup (canola, vegetable, or light olive oil)
- Oil keeps the lemon zucchini cake extra moist.
Plain Greek yogurt or sour cream: 1/2 cup
- Full fat works best, but 2 percent still gives a tender crumb.
Fresh lemon juice: 1/4 cup
Lemon zest: 2 tablespoons, from about 2 large lemons
Pure vanilla extract: 2 teaspoons

Zucchini

Fresh zucchini: 1 1/2 cups finely grated, lightly packed
- About 1 medium to large zucchini.
- Do not peel; the green flecks look pretty in the cake.
- Gently squeeze out excess moisture with a clean towel, but do not wring it dry.

Sweet lemon glaze

Powdered sugar: 1 1/2 to 2 cups, sifted
Fresh lemon juice: 3 to 4 tablespoons
Lemon zest: 1 teaspoon
Pinch of fine sea salt
Optional: 1 to 2 tablespoons milk or heavy cream if you want a creamier glaze

Pantry shortcuts and substitutions

Use bottled lemon juice only in the glaze if you must, but keep fresh lemon juice and zest in the cake for best flavor.
Swap Greek yogurt with plain regular yogurt if needed; strain it briefly if it looks very thin.
Replace up to 1/2 cup of all purpose flour with whole wheat pastry flour for a slightly heartier version.
Use coconut oil in place of neutral oil, but melt it and cool it slightly before mixing.

Equipment list

9 by 5 inch loaf pan or 8 inch square pan
Parchment paper
Two mixing bowls
Whisk and rubber spatula
Box grater or food processor with grating disc for the zucchini
Microplane or fine grater for lemon zest
Cooling rack
Small bowl and spoon for the glaze

Tips & Mistakes

Squeeze the zucchini gently; leave some moisture so the cake stays soft and tender.
Do not overmix the batter; stir until the flour disappears, or the cake can turn dense and tough.
Use room temperature eggs and yogurt so the batter mixes smoothly and bakes evenly.
Line the pan with parchment and leave an overhang, so you lift the lemon zucchini cake out easily.
Zest the lemons before you juice them; zesting cut lemons feels like a tiny punishment.
Taste the glaze before you pour; add more lemon juice for extra tang or more powdered sugar for a thicker topping.
Let the cake cool almost completely before glazing, or the glaze will slide off and pool at the edges.
Avoid opening the oven door during the first 25 minutes, or the center can sink.
Check doneness with a toothpick in the center; a few moist crumbs count as perfect, but wet batter means more time.
Store leftovers properly so the glaze stays nice and the crumb stays moist, not soggy.

How to Make Lemon Zucchini Cake With Sweet Lemon Glaze

Step 1: Prep the pan and oven

Preheat your oven to 350°F. Grease a 9 by 5 inch loaf pan, then line it with parchment so the paper hangs over the long sides. Lightly grease the parchment too so nothing sticks.

Step 2: Grate and prep the zucchini

Wash and dry the zucchini, then grate it on the small holes of a box grater. Scoop the grated zucchini into a clean kitchen towel or paper towels and gently squeeze out extra liquid. Set it aside while you mix the batter.

Step 3: Mix the dry ingredients

In a medium bowl, whisk together the flour, baking powder, baking soda, salt, and any optional spices. Break up any flour clumps so the mixture looks even. Set the bowl aside.

Step 4: Mix the wet ingredients

In a large bowl, whisk the eggs, granulated sugar, and brown sugar until the mixture looks thick and slightly lighter. Add the oil, yogurt or sour cream, lemon juice, lemon zest, and vanilla. Whisk until everything looks smooth and fully combined.

Step 5: Combine wet and dry

Add the dry ingredients to the wet ingredients in two additions. Use a rubber spatula and fold gently until you see no dry flour pockets. Stop mixing as soon as the batter looks mostly smooth.

Step 6: Fold in the zucchini

Add the grated zucchini to the bowl. Fold it in gently until it spreads evenly through the batter. Scrape the bottom of the bowl so no zucchini clumps hide there.

Step 7: Bake the cake

Pour the batter into the prepared pan and smooth the top. Tap the pan lightly on the counter to release any large air bubbles. Bake for 45 to 55 minutes, until a toothpick in the center comes out with a few moist crumbs.

Step 8: Cool the cake

Place the pan on a cooling rack and let the cake cool in the pan for about 15 minutes. Use the parchment overhang to lift the cake out of the pan. Let it cool to just slightly warm or room temperature before you glaze it.

Step 9: Mix the sweet lemon glaze

In a small bowl, whisk 1 1/2 cups powdered sugar, 3 tablespoons lemon juice, lemon zest, and a pinch of salt. Adjust the consistency with more lemon juice for a thinner glaze or more powdered sugar for a thicker one. If you want a creamier glaze, whisk in a spoonful of milk or cream.

Step 10: Glaze and set

Place the cooled lemon zucchini cake on the rack with a tray or parchment underneath to catch drips. Pour the sweet lemon glaze over the top, letting it drip down the sides. Let the glaze set for at least 20 to 30 minutes before slicing.

Variations I've Tried

I swap half the lemon zest with lime zest for a lemon lime zucchini cake that tastes extra bright and tropical. I fold in 1/2 cup mini chocolate chips for a chocolate lemon twist that kids love. I also stir in 1/2 cup blueberries tossed in a spoonful of flour, which gives little pockets of juicy fruit in every slice.

I sometimes use orange zest and juice instead of lemon for a soft orange zucchini loaf with vanilla glaze. I top the glazed cake with toasted sliced almonds or shredded coconut when I want a bit of crunch. I also bake the batter in a muffin tin and shorten the bake time to about 18 to 22 minutes for portable lemon zucchini cupcakes.

How to Serve Lemon Zucchini Cake With Sweet Lemon Glaze

Serve slices slightly warm or at room temperature so the lemon flavor shines and the crumb stays soft. Pair the lemon zucchini cake with a mug of coffee, hot tea, or a cold glass of milk for a cozy snack. Add fresh berries or a spoonful of vanilla yogurt on the side for a light dessert plate. Cut smaller slices for brunch platters or generous slices when you want a serious lemon fix.

How to store

Room temperature: Keep the glazed lemon zucchini cake in an airtight container at room temp for up to 2 days.
Fridge: Store slices in a covered container in the fridge for 4 to 5 days; let them sit on the counter 15 minutes before serving so the texture softens.
Freezer: Wrap individual slices tightly in plastic, then place them in a freezer bag for up to 2 months; label the bag so you do not forget what that mystery loaf is.
Reheating: Warm a slice in the microwave for 10 to 15 seconds, just until the crumb softens and the glaze loosens slightly without melting completely.