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A stack of three lemon bars being sprinkled with powdered sugar.

Lemon Bars Recipe

Classic Lemon Bars with a shortbread-style crust and silky smooth, slightly tart, sweet lemon custard on top. All they need is a dusting of powdered sugar!
Course Dessert
Cuisine American
Prep 45 minutes
Cook 40 minutes
Total 1 hour 25 minutes
Servings 24 bars
Calories 162 kcal
Author Michelle


For the Crust

  • cups all-purpose flour
  • cup powdered sugar, plus extra for decorating finished bars
  • ¼ cup cornstarch
  • ¾ teaspoon salt
  • ¾ cup unsalted butter, at cool room temperature, cut into 1-inch pieces

For the Filling

  • 4 eggs beaten lightly
  • 1⅓ cups granulated sugar
  • 3 tablespoons all-purpose flour
  • 2 teaspoons grated lemon zest from about 2 large lemons
  • cup lemon juice
  • cup whole milk
  • Pinch salt


  1. Preheat oven to 350 degrees F. Lightly butter a 9x13-inch baking pan and line with parchment paper.
  2. Make the Crust: Pulse flour, powdered sugar, cornstarch, and salt in a food processor. Add the butter and process for 8 to 10 seconds and then pulse until the mixture is pale yellow and resembles coarse meal, about three 1-second pulses. Sprinkle the mixture into the lined pan and press firmly into an even layer over the entire pan bottom and ½-inch up the sides. Refrigerate for 30 minutes, then bake until golden brown, about 20 minutes.
  3. Make the Filling: Meanwhile, whisk the eggs, sugar and flour in a medium bowl, then stir in the lemon zest, lemon juice, milk and salt to blend well.
  4. Reduce the oven temperature to 325 degrees F. Stir the filling mixture to reincorporate the ingredients, then pour into the warm crust. Bake until the filling feels firm when touched lightly, about 20 minutes. Transfer the pan to a wire rack; cool to near room temperature, at least 30 minutes. Lift the bars from the pan using the parchment paper, then place on a cutting board to slice into squares. Sift powdered sugar over bars, if desired. Leftover bars can be covered in plastic wrap and refrigerated for up to 2 days.

Recipe Notes

  • You can prepare the crust by hand simply by whisking together the flour, powdered sugar, cornstarch, and salt. Then, cut in the butter with a pastry blender (or grate frozen butter into the mixture and rub together quickly with your fingers) until completely incorporated and resembles coarse meal.
  • The filling needs to be poured into a warm crust straight from the oven, so once the crust is in the refrigerator chilling, prepare the filling so it's ready when the crust comes out of the oven.

Nutritional values are based on one serving

Nutrition Facts
Lemon Bars Recipe
Amount Per Serving
Calories 162 Calories from Fat 54
% Daily Value*
Fat 6g9%
Saturated Fat 3g19%
Cholesterol 42mg14%
Sodium 85mg4%
Potassium 33mg1%
Carbohydrates 24g8%
Sugar 14g16%
Protein 2g4%
Vitamin A 220IU4%
Vitamin C 2.8mg3%
Calcium 11mg1%
Iron 0.6mg3%
* Percent Daily Values are based on a 2000 calorie diet.