The BEST Lemon Bars Recipe

The BEST Lemon Bars Recipe is a easy American recipe that serves 15. 420 calories per serving. Recipe by Preppy Kitchen on YouTube.

Prep: 40 min | Cook: 47 min | Total: 1 hr 42 min

Cost: $6.22 total, $0.41 per serving

Ingredients

  • 3 cups All-Purpose Flour (for shortbread crust, sifted)
  • 0.75 cup Powdered Sugar (for shortbread crust)
  • 0.5 teaspoon Salt (fine sea salt)
  • 200 g Unsalted Butter (melted, room temperature)
  • 1 teaspoon Vanilla Extract (optional, adds flavor)
  • 3 cups Granulated Sugar (for lemon curd)
  • 3 tablespoons Lemon Zest (zest of about 3 lemons)
  • 0.5 cup All-Purpose Flour (thickening agent for curd)
  • 1 cup Fresh Lemon Juice (from about 4–5 lemons, no seeds)
  • 8 Large Eggs (room temperature, shells removed)
  • 0.25 cup Powdered Sugar (for dusting the finished bars)

Instructions

  1. Preheat Oven

    Set the oven to 350°F (175°C) and let it preheat while you prepare the crust.

    Time: PT10M

    Temperature: 350°F

  2. Combine Dry Crust Ingredients

    In a large mixing bowl, whisk together 3 cups all‑purpose flour, 3/4 cup powdered sugar, and 1/2 teaspoon salt until evenly blended.

    Time: PT5M

  3. Add Melted Butter

    Melt 200 g unsalted butter (3 ¼ cups) and pour it into the dry mixture. Add 1 teaspoon vanilla extract if desired, then stir with a spatula until a crumbly dough forms.

    Time: PT5M

  4. Press Crust into Pan

    Line a 9×13‑inch baking dish with parchment paper. Sprinkle the dough into the pan, break into crumbs, and press evenly with clean hands or a flat‑bottomed glass, ensuring no gaps or cracks.

    Time: PT5M

  5. Bake Shortbread Crust

    Place the pan in the preheated oven and bake for 22 minutes, or until the edges are a light golden color.

    Time: PT22M

    Temperature: 350°F

  6. Zest and Sugar Rub

    While the crust bakes, add 3 tablespoons lemon zest to 3 cups granulated sugar in the food processor. Pulse until the mixture turns light yellow and feels like wet sand.

    Time: PT5M

  7. Juice Lemons

    Zest the lemons first, then juice them to obtain exactly 1 cup of fresh lemon juice, straining out any seeds.

    Time: PT5M

  8. Add Flour to Sugar Mixture

    Transfer the lemon‑sugar blend to a large bowl, sprinkle in 1/2 cup all‑purpose flour, and whisk until fully incorporated.

    Time: PT3M

  9. Incorporate Juice and Eggs

    Add the 1 cup lemon juice and 8 room‑temperature eggs (cracked into a separate bowl) to the mixture. Whisk vigorously until smooth and uniform.

    Time: PT4M

  10. Combine Filling with Hot Crust

    Remove the baked crust from the oven, give the filling a quick stir, then pour it over the hot crust, spreading evenly.

    Time: PT2M

  11. Bake Lemon Bars

    Return the pan to the oven and bake for 25 minutes, turning the pan halfway through. The bars are done when the center has only a slight jiggle.

    Time: PT25M

    Temperature: 350°F

  12. Cool and Chill

    Allow the bars to cool in the pan for about 1 hour, then refrigerate for at least 2 hours before cutting.

    Time: PT0M

  13. Dust and Cut

    Lift the parchment paper, dust the top with sifted powdered sugar, and cut into 15 squares using a dampened knife, wiping the blade between cuts.

    Time: PT10M

Nutrition Facts

Calories
420
Protein
3g
Carbohydrates
74g
Fat
15g
Fiber
2g

Dietary info: Vegetarian, Contains gluten, Contains dairy

Allergens: Wheat, Eggs, Dairy

Last updated: April 18, 2026

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The BEST Lemon Bars Recipe

Recipe by Preppy Kitchen

These classic American lemon bars feature a buttery shortbread crust and a bright, zingy lemon curd topping. The recipe is quick, easy, and perfect for any occasion. Dust with powdered sugar and cut into 15 bars for a refreshing, melt‑in‑your‑mouth treat.

EasyAmericanServes 15

Shop all ingredients on Amazon in one click • Printable PDF with shopping checklist

Source Video
47m
Prep
54m
Cook
12m
Cleanup
1h 53m
Total

Cost Breakdown

$6.22
Total cost
$0.41
Per serving

Critical Success Points

  • Press the shortbread crust evenly with no gaps to prevent floating.
  • Rub lemon zest with sugar until it feels like wet sand to extract oils.
  • Pour the filling onto a hot crust for a jump‑start bake.
  • Bake until the center has only a slight jiggle; overbaking leads to dry bars.

Safety Warnings

  • Handle the hot oven and baking pan with oven mitts to avoid burns.
  • Melted butter is very hot; pour carefully.
  • Use a sharp knife with a stable cutting board; keep fingers clear.

Frequently Asked Questions

Everything you need to know about this recipe

Q

What is the cultural significance and history of Zingy Lemon Bars in American cuisine?

A

Lemon bars originated in the United States in the early 1960s, first popularized by a 1962 Chicago Tribune recipe. They combine a Scottish shortbread crust with a bright lemon curd, reflecting post‑war American love for easy, portable desserts.

cultural
Q

What are the traditional regional variations of lemon bars in American cuisine?

A

In the Midwest, the classic version uses a simple shortbread crust. Some Southern variations add a pinch of cornmeal for texture, while West Coast bakers often incorporate a drizzle of raspberry coulis or a sprinkle of toasted coconut on top.

cultural
Q

How is Zingy Lemon Bars traditionally served in the United States?

A

They are typically served chilled, dusted with powdered sugar, and cut into square or rectangular bars. They appear at potlucks, bake sales, and as a sweet finish to brunches or afternoon tea.

cultural
Q

During what occasions are lemon bars traditionally enjoyed in American culture?

A

Lemon bars are popular at family gatherings, picnics, holiday cookie swaps, and summer barbecues because they are easy to transport and can be made ahead of time.

cultural
Q

What authentic ingredients are essential for traditional lemon bars versus acceptable substitutes?

A

The authentic recipe calls for fresh lemon juice and zest, unsalted butter, all‑purpose flour, granulated sugar, powdered sugar, and eggs. Acceptable substitutes include gluten‑free flour for the crust, salted butter (reduce added salt), and egg replacer for a vegan version, though flavor and texture will change.

cultural
Q

What are the most common mistakes to avoid when making Zingy Lemon Bars?

A

Common errors include not pressing the crust firmly, which causes floating; over‑mixing the butter‑flour mixture, leading to a tough crust; and over‑baking the filling, resulting in a dry bar. Follow the critical steps to ensure a smooth, glossy curd.

technical
Q

Why does this lemon bars recipe use a hot crust for the filling instead of a cooled crust?

A

Pouring the filling onto a hot crust gives the curd an immediate baking start, helping it set evenly and preventing the crust from lifting. A cold crust can cause the filling to sink and create gaps.

technical
Q

Can I make Zingy Lemon Bars ahead of time and how should I store them?

A

Yes. Bake the crust and fill the bars up to the point of chilling. Once chilled, keep them in an airtight container in the refrigerator for up to one week, or freeze individual bars for up to three months.

technical
Q

What texture and appearance should I look for when the lemon bars are done?

A

The crust should be lightly golden and firm. The filling will have a bright yellow hue and a very slight jiggle in the center; it will firm up further as it cools. The top should be smooth, not cracked.

technical
Q

What does the YouTube channel Preppy Kitchen specialize in?

A

The YouTube channel Preppy Kitchen specializes in approachable, step‑by‑step home cooking tutorials that focus on classic comfort foods and quick, delicious desserts with clear visual guidance.

channel
Q

How does the YouTube channel Preppy Kitchen's approach to American dessert cooking differ from other cooking channels?

A

Preppy Kitchen emphasizes minimal equipment, clear narration, and practical tips like using a flat‑bottomed glass to press crusts, making classic American desserts accessible for beginner home cooks, whereas many channels focus on elaborate techniques or specialty equipment.

channel

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