Zesty Lemon Bars

If you’re dreaming of a dessert that screams sunshine, these Zesty Lemon Bars are about to steal your heart. Imagine a buttery, crumbly shortbread crust topped with a silky, tangy lemon filling that’s just the right mix of sweet and tart. After some kitchen love, we’ve got this recipe locked in—no fuss, no stress, just pure lemony goodness. These bars are perfect for summer picnics, BBQs, or a lazy afternoon with a cold drink. Ready to whip up a batch of happiness? Let’s get baking!

Why You’ll Love These Lemon Bars

• Bright & Balanced: Fresh lemon juice and zest deliver a zippy, summery flavor that’s not too intense.
• Perfect Texture: A crisp, thin crust meets a creamy filling that slices perfectly.
• Super Easy: Simple ingredients and a few handy tips make these a breeze to nail.
• Summer Vibes: Chill these bars, dust with powdered sugar, and share the love!

Tips for Perfect Lemon Bars

• Crust: Use cool, softened butter (not melty) for a crumbly texture. If the mix sticks, chill it briefly before pressing.
• Filling: Fresh lemon juice is key for that bright flavor. The immersion blender creates a dreamy, smooth texture, but whisking’s great too.
• Chilling: Don’t skip the fridge time—it’s what gives you those clean, pretty slices.

Let’s Bake Some Sunshine!

These Zesty Lemon Bars are your ticket to summer dessert bliss—easy, delicious, and totally shareable. I’m obsessed with how simple they are now that we’ve got the proportions perfect. Whip up a batch, share them with your crew, and let me know how they turn out in the comments! Got a fun twist or a summer serving idea? I’m all ears—let’s keep the baking love going!

Happy baking, and here’s to sunny, lemony goodness!

Zesty Lemon Bars

Print Recipe

Bright and tangy, these Zesty Lemon Bars are the ultimate summer dessert! Shortbread crust pairs perfectly with a silky, firm lemon filling that’s bursting with fresh lemon flavor. These bars are ideal for picnics, barbecues, or a refreshing treat. Chill, slice, and dust with powdered sugar for a beautiful and delicious goody!

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Prep Time:20 minutes mins

Cook Time:30 minutes mins

Chill Time:2 hours hrs

Total Time:2 hours hrs 50 minutes mins

Servings: 16 bars

Author: Julie Gavin

equipment (affiliate links

• Measuring cups
• Measuring spoons
• kitchen scale for best accuracy
• mixing bowl
• citrus juicer OR
• electric citrus juicer
• Mixer
• immersion blender OR
• Blender
• Parchment paper
• 9×9-inch pan
• Probe thermometer optional to check doneness

Ingredients

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For the Shortbread Crust:

• ½ c. (113 g) salted butter softened
• ¼ c. (50 g) granulated sugar
• ½ tsp. vanilla extract
• 1 ½ c. (180 g) unbleached all-purpose flour (RECOMMEND WEIGHING)
• ⅛ tsp. salt

For the Lemon Filling:

• 1 c. (200 g) granulated sugar
• 2 tbsp. unbleached all-purpose flour
• 1 tsp. cornstarch
• 3 large eggs
• 1 large egg yolk
• ½ c. (120 g) fresh lemon juice fresh is a must
• 2 tbsp. lemon zest from 2 lemons
• ¼ tsp. baking powder
• ⅛ tsp. salt
• ¼ c. powdered sugar for dusting just before serving

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Instructions

• Preheat and Prep: Preheat oven to 350°F (175°C). Line a 9×9-inch metal baking pan with parchment paper, leaving an overhang for easy removal.
• Prepare the Shortbread Crust: In a bowl, beat softened butter, granulated sugar, and vanilla on low speed for ~1 minute until just combined. Avoid over-mixing to keep the crust light. Add flour and salt. Mix on low until coarse crumbs form (like wet sand, not a sticky dough). Pinch apart clumps if needed. Pour crumbs into the pan and gently press into a thin, even layer. Use a flat-bottomed glass for a smooth surface.
  ½ c. (113 g) salted butter

  ¼ c. (50 g) granulated sugar

  1 ½ c. (180 g) unbleached all-purpose flour (RECOMMEND WEIGHING)

  ½ tsp. vanilla extract

  ⅛ tsp. salt
• Bake Shortbread: Bake for 12–15 minutes, until edges are lightly golden. Remove and keep warm.
• Prepare the Lemon Filling: In a small bowl, whisk sugar, flour, and cornstarch to combine. To a medium bowl or blender add eggs, egg yolk, lemon juice, zest, baking powder, and salt. Blend for a minute or two or until the mixture is smooth and the zest is broken up. Pour over the warm crust.
  1 c. (200 g) granulated sugar

  2 tbsp. unbleached all-purpose flour

  1 tsp. cornstarch

  3 large eggs

  1 large egg yolk

  ½ c. (120 g) fresh lemon juice

  2 tbsp. lemon zest

  ¼ tsp. baking powder

  ⅛ tsp. salt
• Bake the Assembled Bars: Bake for 20-22 minutes, rotating the pan at 10 minutes for even heat. Check for: A slight center jiggle (like soft gelatin, not runny), a matte surface with firm edges, and an internal temperature of 160–165°F (71–74°C) in the center.
• Cool, Chill, & Serve: Cool at room temperature for 30 minutes. Refrigerate for 2–4 hours to fully set the filling. Lift bars out using parchment, cut into 16 squares, and dust with powdered sugar just before serving. Garnish with lemon zest curls or lemon slices if desired.
  ¼ c. powdered sugar
• Storage: Refrigerate in an airtight container for up to 5 days or freeze for up to 2 months.

Notes

• Crust Tips:
  • If the crust is sticky, chill crumbs for 5–10 minutes before pressing.
  • Ensure butter isn’t melty.
  • Mix to coarse crumbs (wet sand texture); over-mixing makes it doughy.
• Filling Tips:
  • Using an immersion blender to break up zest creates a smoother filling texture. A whisk works but may leave zest flecks.
  • Rotate the pan at 10 minutes to avoid a runny center.
  • Check doneness with a thermometer (160–165°F) and look for a matte surface with a slight jiggle.

Serving: 1bar | Calories: 245kcal | Carbohydrates: 42g | Protein: 4g | Fat: 7g | Saturated Fat: 4g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 2g | Trans Fat: 0.2g | Cholesterol: 59mg | Sodium: 99mg | Potassium: 51mg | Fiber: 1g | Sugar: 22g | Vitamin A: 247IU | Vitamin C: 4mg | Calcium: 17mg | Iron: 1mg

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