Lemon Zucchini Bars Recipe

Lemon Zucchini Bars Recipe tastes bright, buttery, and tender with a soft cake-like crumb and a tangy lemon glaze on top. This dessert works perfectly for anyone who loves lemon desserts, wants to sneak extra veggies into a treat, and needs a crowd-pleasing recipe in about 55 minutes total. I first baked these bars for a summer potluck and ended up sending the recipe to half the neighborhood.

Why Choose This Lemon Zucchini Bars Recipe

These lemon zucchini bars stay incredibly moist from the shredded zucchini, yet taste like a bakery-style lemon snack cake. The glaze soaks into the top and gives every bite a sweet-tart finish that keeps people going back for seconds.

You mix the batter in one bowl, use simple pantry staples, and skip any fussy layering or chilling. The recipe also freezes well, so you can bake once and enjoy lemon zucchini bars whenever the craving hits.

“These lemon zucchini bars disappeared from the dessert table in 10 minutes and everyone asked for the recipe. ★★★★★”

Ingredients You’ll Need

Dry ingredients

• 2 cups all-purpose flour
  • Use unbleached flour if possible for better flavor.
• 1 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon fine sea salt
• 1 cup granulated sugar

Wet ingredients

• 2 large eggs, room temperature
• 1/2 cup unsalted butter, melted and slightly cooled
  • Use real butter, not margarine, for the best flavor and texture.
• 1/4 cup neutral oil (canola or vegetable oil)
  • The oil keeps the bars extra moist and soft.
• 1/3 cup plain Greek yogurt or sour cream
  • Either works; Greek yogurt adds a tiny bit more tang.
• 2 tablespoons milk (any dairy milk, or unsweetened almond milk)
• 1 tablespoon pure vanilla extract
• 2 tablespoons fresh lemon juice
• 1 tablespoon finely grated lemon zest
  • Use unwaxed lemons and zest only the yellow part, not the bitter white pith.

Zucchini

• 1 1/2 cups finely shredded zucchini, lightly packed
  • About 1 medium zucchini.
  • Do not peel; the green flecks look pretty and add nutrients.
  • Pat very lightly with a paper towel if it seems extremely wet, but do not squeeze it dry or the bars lose moisture.

Lemon glaze

• 1 1/2 cups powdered sugar, sifted
• 3–4 tablespoons fresh lemon juice
  • Start with 3 tablespoons, then add more for a thinner glaze.
• 1 teaspoon lemon zest
• Pinch of salt

Optional add-ins

• 1/2 cup white chocolate chips for a sweeter bar
• 1/2 cup chopped toasted almonds or walnuts for crunch
• Extra lemon zest on top for stronger lemon flavor

Equipment

• 9×13 inch baking pan
  • Use a light-colored metal pan for the most even baking.
• Parchment paper or nonstick baking spray
• Large mixing bowl
• Medium bowl
• Whisk and rubber spatula
• Box grater or food processor with shredding disk for the zucchini
• Microplane or fine grater for the lemon zest
• Cooling rack
• Small bowl and spoon for the glaze

Tips & Tricks

• Measure flour by spooning it into the cup and leveling it so the bars stay tender, not dense.
• Use room temperature eggs so they mix smoothly into the batter and give better structure.
• Zest the lemons before you juice them because whole lemons feel easier to handle.
• Stir the batter gently once you add the flour so you avoid tough bars.
• Line the pan with parchment and leave a little overhang so you lift the bars out easily for clean slicing.
• Taste the glaze and adjust the lemon juice and powdered sugar until it hits your perfect sweet-tart balance.
• Let the bars cool completely before glazing so the topping sets instead of soaking in too much.
• Chill the bars for 30 minutes after glazing if you want super neat slices.

How to Make Lemon Zucchini Bars Recipe

Step 1: Prep the pan and oven

Preheat your oven to 350°F (175°C). Lightly grease a 9×13 inch pan and line it with parchment, then grease the parchment as well. Set the pan aside while you mix the batter.

Step 2: Shred the zucchini

Wash and dry the zucchini. Grate it on the small holes of a box grater or use a food processor with a fine shredding disk. Spread the shredded zucchini on a plate and pat it very lightly with a paper towel if it looks extremely watery, but keep most of the moisture.

Step 3: Mix the dry ingredients

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

Step 4: Mix the wet ingredients

In a large mixing bowl, whisk the melted butter, oil, eggs, yogurt or sour cream, milk, vanilla, lemon juice, and lemon zest. Whisk until the mixture looks smooth and slightly thick. Scrape the sides of the bowl so everything combines evenly.

Step 5: Combine wet and dry

Add the dry ingredients to the wet ingredients in two additions. Gently fold with a spatula until you see only a few streaks of flour. Add the shredded zucchini and any optional add-ins, then fold again until everything looks evenly combined and no dry spots remain.

Step 6: Bake the bars

Spread the batter evenly into the prepared pan and smooth the top. Bake for 22–28 minutes, until the top looks set, the edges turn light golden, and a toothpick inserted in the center comes out with a few moist crumbs. Rotate the pan once during baking if your oven heats unevenly.

Step 7: Cool the bars

Place the pan on a cooling rack. Let the lemon zucchini bars cool in the pan until they reach room temperature. Resist the urge to cut early, since warm bars can crumble and the glaze will slide off.

Step 8: Mix the lemon glaze

In a small bowl, whisk the powdered sugar, 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. Aim for a pourable glaze that slowly runs off the spoon.

Step 9: Glaze and slice

Pour the glaze over the cooled bars and spread it gently with the back of a spoon or an offset spatula. Let the glaze set for at least 20–30 minutes. Lift the bars out of the pan using the parchment, transfer to a cutting board, and slice into squares or rectangles.

What to Serve with Lemon Zucchini Bars Recipe

Serve these lemon zucchini bars slightly chilled or at room temperature for the best texture and flavor. Pair them with hot coffee, black tea, or a big glass of cold milk for a cozy afternoon treat. Kids love them with lemonade or iced herbal tea, especially on warm days. Add a dollop of whipped cream or a scoop of vanilla ice cream if you want an extra indulgent dessert plate.

Storage Options

• Store leftover lemon zucchini bars in an airtight container at room temperature for up to 2 days.
• Keep them in the fridge for up to 5 days if your kitchen runs warm or you like them chilled.
• Freeze individual bars on a baking sheet until firm, then wrap each piece and store in a freezer bag for up to 2 months.
• Thaw frozen bars in the fridge overnight or on the counter for about 30 minutes, and enjoy chilled or bring to room temperature before serving.

Lemon Zucchini Bars Recipe

Lemon Zucchini Bars are moist, bright, and lightly sweet dessert bars made with shredded zucchini and fresh lemon for a tender crumb and zesty flavor.

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Prep Time 20 minutes mins

Cook Time 25 minutes mins

Total Time 45 minutes mins

Servings: 12

Course: Dessert

Cuisine: American

Ingredients

  

• 1 1/2 cups all-purpose flour
• 1 teaspoon baking powder
• 1/2 teaspoon baking soda
• 1/2 teaspoon fine sea salt
• 1 cup granulated sugar
• 1/2 cup unsalted butter, melted and slightly cooled
• 2 large eggs
• 2 tablespoons fresh lemon juice
• 1 tablespoon lemon zest (from 1–2 lemons)
• 1 teaspoon vanilla extract
• 1 1/2 cups finely shredded zucchini, excess moisture squeezed out

• 1 cup powdered sugar
• 2–3 tablespoons fresh lemon juice
• 1/2 teaspoon lemon zest

Instructions

 

1. Preheat the oven to 350°F (175°C). Grease or line an 8x8-inch baking pan with parchment paper, leaving some overhang for easy removal.
2. In a medium bowl, whisk together the flour, baking powder, baking soda, and salt; set aside.
3. In a large bowl, whisk the sugar and melted butter until combined. Add the eggs, lemon juice, lemon zest, and vanilla, whisking until smooth.
4. Fold the dry ingredients into the wet mixture just until combined; do not overmix.
5. Gently fold in the shredded, well-squeezed zucchini until evenly distributed in the batter.
6. Spread the batter evenly into the prepared pan and smooth the top with a spatula.
7. Bake for 22–26 minutes, or until the edges are lightly golden and a toothpick inserted in the center comes out clean or with a few moist crumbs.
8. Let the bars cool completely in the pan on a wire rack before glazing.

1. In a small bowl, whisk together the powdered sugar and 2 tablespoons lemon juice until smooth. Add more lemon juice, a few drops at a time, until you reach a thick but pourable consistency. Stir in lemon zest if using.
2. Pour or drizzle the glaze over the cooled bars, spreading gently to cover the surface.
3. Allow the glaze to set for at least 20–30 minutes, then use the parchment overhang to lift the bars from the pan.
4. Slice into 12 bars and serve. Store leftovers covered at room temperature for up to 2 days or refrigerated for up to 5 days.

Notes

Nutrition Information
Approximate per bar (1 of 12): 210 calories; fat 8 g; saturated fat 5 g; carbohydrates 33 g; fiber 1 g; sugars 23 g; protein 3 g; sodium 140 mg. Values will vary based on specific ingredients, brands, and portion size.