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Close-up of freshly baked Lemon Crumb Bars with a golden crumb topping and vibrant lemon filling, dusted with powdered sugar.

Lemon Crumb Bars – How to Make These Irresistible Treats


  • Author: Ava
  • Total Time: 3 hours 10 minutes (includes cooling)
  • Yield: 16 bars 1x

Description

These lemon crumb bars combine a buttery shortbread crust, a tangy lemon filling, and a crumbly topping for a delightful dessert perfect for any occasion.


Ingredients

Scale
  • For the Crust and Crumb Topping:

  • 2½ cups all-purpose flour
  • 1 cup granulated sugar
  • 1 teaspoon baking powder
  • ¼ teaspoon salt
  • 1 cup cold unsalted butter, cut into small cubes
  • 1 large egg, lightly beaten
  • 1 teaspoon vanilla extract
  • For the Lemon Filling:

  • 4 large eggs
  • 1½ cups granulated sugar
  • ⅓ cup all-purpose flour
  • 2 tablespoons lemon zest (from approximately 23 lemons)
  • ⅔ cup fresh lemon juice (from approximately 34 lemons)
  • ¼ teaspoon salt

Instructions

  1. Prepare Baking Dish: Preheat oven to 350°F (175°C). Line a 9×13-inch baking dish with parchment paper.
  2. Make Crust and Crumb Mixture: Whisk together flour, sugar, baking powder, and salt. Add butter and mix until crumbly. Add egg and vanilla; mix until just combined.
  3. Press Crust: Press two-thirds of the mixture into the baking dish.
  4. Pre-Bake Crust: Bake for 15-18 minutes until edges are lightly golden.
  5. Prepare Lemon Filling: Whisk together eggs, sugar, flour, lemon zest, lemon juice, and salt.
  6. Assemble and Bake: Pour lemon filling over the crust. Top with remaining crumb mixture. Bake for 25-30 minutes until filling is set and topping is golden.
  7. Cool Completely: Allow to cool completely before refrigerating for at least 1 hour.

Notes

  • Use fresh lemons for the best flavor.
  • Meyer lemons can be used for a sweeter profile.
  • Refrigerate the bars for at least 1 hour before cutting for clean edges.
  • Prep Time: 25 minutes
  • Cook Time: 45 minutes
  • Category: Desserts
  • Method: Baking
  • Cuisine: American

Nutrition

  • Serving Size: 1 bar
  • Calories: 285 kcal
  • Sugar: 28g
  • Sodium: 95mg
  • Fat: 12g
  • Saturated Fat: 7g
  • Unsaturated Fat: 4g
  • Trans Fat: 0g
  • Carbohydrates: 42g
  • Fiber: 0.5g
  • Protein: 3g
  • Cholesterol: 85mg

Keywords: Lemon Crumb Bars, easy lemon dessert, citrus bars, crumb topping, shortbread bars