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Lemon Sugar Cookie Bars

Golden lemon sugar cookie bars with crackly crust and bright glaze in ceramic dish.

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These bars capture the sunny, nostalgic flavor of a classic lemon sugar cookie in an easy one-pan form. They have a soft, dense, cake-like crumb with a bright citrus tang and a sparkling sugary top. Perfect for any occasion, from a simple afternoon treat to a spring dessert table centerpiece.

Ingredients

Scale
  • 1 cup (2 sticks) unsalted butter, softened to room temperature
  • 1 1/2 cups granulated sugar
  • 2 large eggs, at room temperature
  • 1 tablespoon fresh lemon zest (from about 2 large lemons)
  • 2 tablespoons fresh lemon juice
  • 1 teaspoon pure vanilla extract
  • 2 3/4 cups all-purpose flour
  • 1/2 teaspoon baking powder
  • 1/2 teaspoon salt
  • 1/4 cup granulated sugar (for topping)

Instructions

  1. Preheat oven to 350°F (175°C). Line a 9×13 inch baking pan with parchment paper, leaving an overhang on the sides for easy removal.
  2. In a large bowl, beat the softened butter and 1 1/2 cups granulated sugar on medium speed for 2-3 minutes, until light, fluffy, and pale.
  3. Beat in the eggs one at a time, mixing well after each addition. Mix in the lemon zest, lemon juice, and vanilla extract.
  4. In a separate bowl, whisk together the flour, baking powder, and salt.
  5. Add the dry ingredients to the wet ingredients in two additions, mixing on low speed or folding by hand just until combined. Do not overmix.
  6. Transfer the dough to the prepared pan. Use lightly floured hands or the bottom of a measuring cup to press it into an even layer.
  7. Sprinkle the remaining 1/4 cup of granulated sugar evenly over the top of the dough.
  8. Bake for 25-30 minutes, until the edges are light golden brown and the center is set. A toothpick inserted near the center should come out clean or with a few moist crumbs.
  9. Let the pan cool completely on a wire rack before slicing into squares.

Notes

The key to a soft, tender texture is not overmixing the batter once the flour is added. Be sure to use room temperature butter and eggs for best results. For a stronger lemon flavor, add 1/4 teaspoon of lemon extract with the wet ingredients. Store cooled bars in an airtight container at room temperature for 3-4 days, or freeze for up to 3 months.

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