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Lemon Squares

Lemon squares or lemon bars are a favorite of mine, especially because this lemon bar recipe was shared with me by my grandmother. Seeing her handwriting on a recipe card and baking these lemon treats is a special way that I remember her joy of baking these for family gatherings. A shortbread crust is topped with a lemon curd filling. Sprinkling powdered sugar on top finishes them off perfectly!

Lemon Square with lemon slices on parchment paper

Lemon Recipes

Lemon comes in a close second to chocolate in my ranking of desserts…usually. For these easy lemon bars, though, I’d pass right by a chunk of chocolate just to enjoy one (or two or three!) squares of these lemony sweets. The rich, buttery crust perfectly pairs with the bright, lemon filling.

This is my grandmother’s lemon square recipe and I have yet to be disappointed by it. I’ve made these lemon squares in every home I’ve had in the past fifteen years—levels of humidity and various altitudes can do nothing to dim the bright taste of this lemon dessert.

Baking easy lemon bars is a great idea is the heat of the summer or in the dull days of winter when you crave a citrus pop of flavor. Lemons are readily available year round. Before baking with lemon, scrub the outer peel with a vegetable brush to clean off any residue that might be on the lemon. You’ll use the zest and the juice of the lemons so choosing organic lemons is a good choice.

How to Make Lemon Bars

The key to the best lemon bars is to partially bake the crust first, then to add the lemon custard. Bake until the lemon layer is no longer jiggly (yup, now there is a technical term!). Allow the lemon bars to cool in the pan. Sift a dusting of confectioners sugar on top.

This topping step that might date the appearance of the squares a bit, but yes, the recipe comes from the 50s and 60s! I’ve seen contestants on cooking shows receive poor marks for this outdated attempt at plate presentation but I still like it and sift away. My grandmother would serve it no other way!

Gluten free Lemon Bars:

Homemade lemon bars are easily made gluten free if you substitute the traditional flour for a Gluten Free Flour Blend in the shortbread crust. In this recipe I used Bob’s Red Mill Gluten 1 to 1 Baking Flour to swap out the traditional flour and to make this a gluten free dessert.  In fact, the photos on this post are gluten free lemon squares made with the flour substitute. You really can’t tell the difference in looks or taste!

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five Lemon squares on a plate with lemon slices
Yield: 24

Lemon Squares

Lemon Square with lemon slices

My favorite lemon squares or lemon bars are easily made with a shortbread crust and a lemon custard layer baked on top. Finish with a sprinkle of confectioners sugar.


  • Crust:
  • 2 sticks of butter (1/2 lb)
  • 1/2 cup of confectioners sugar
  • 2 cups flour (If making the gluten free version, please choose to substitute a Gluten Free Flour Blend. I use Bob’s Red Mill Gluten Free 1 to 1 Baking Flour)
  • For the Lemon Layer:
  • 4 eggs
  • 2 cups of granulated sugar
  • 1/3 cup of fresh lemon juice (2-3 lemons)
  • zest of 2 lemons
  • 1/3 cup of unsifted flour (If making the gluten free version, please choose to substitute a Gluten Free Flour Blend. I use Bob’s Red Mill Gluten Free 1 to 1 Baking Flour)
  • 1 tsp baking powder


For the Crust:

Preheat the oven to 350 degrees F. Grease a 9 x 13 pan (I use the butter wrapper).

Cream butter and sugar until fluffy then add the flour and blend well. Use your fingers to easily press the dough into the pan. Bake at 350 degrees for 20 minutes.

For the Lemon Layer:

Beat the eggs until light and fluffy. Gradually add the sugar, beat until think and well blended. Add the lemon juice, zest, flour and baking powder. Beat until thoroughly mixed. Pour over the slightly cooled crust.

Bake for 25-30 minutes, until golden and the lemon custard is set.

Cool then sprinkle with 2 tsp of confectioners sugar.


These bars are easy to make gluten free by substituting a gluten free 1 to 1 Flour Mix for the traditional flour.

Nutrition Information:



Serving Size:

1 square

Amount Per Serving: Calories: 239Total Fat: 9gSaturated Fat: 5gTrans Fat: 0gUnsaturated Fat: 3gCholesterol: 51mgSodium: 94mgCarbohydrates: 37gFiber: 1gSugar: 19gProtein: 4g

This data is provided by Nutritionix and is an estimate only.

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Lemon Bar dessert with powdered sugar topping

Here are more dessert bar recipes you’ll enjoy!

This recipe was originally published in April 2012 and was updated in March 2018.

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Wednesday 9th of May 2012

Thanks for linking up! I saw these lemon squares and they reminded me that my son has been asking for them! Love that it is in a 9x13, we need alot!


Monday 23rd of April 2012

These Lemon Squares look just about perfect :)

Very sweet place you have here too. I have enjoyed perusing many of your posts!

Kindly, Lorraine


Tuesday 17th of April 2012

Yummy! Lemon bars remind me of springtime!

Holly @ A Baker's House

Tuesday 17th of April 2012

Me too! thanks for your comment. Have a great night!


Monday 16th of April 2012

I just looooooooooove lemon-squares, and yours looks very inviting!

Holly @ A Baker's House

Monday 16th of April 2012

I do hope you enjoy them. It's my grandmother's recipe and it brings me happiness each time I make the squares. Thanks for commenting!


Sunday 15th of April 2012

Hello! Lemon is number one for me...yum!I'm visiting from the hop, followed you via GFC.Now I'm tweeting your posts so everyone can find you.

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Holly @ A Baker's House

Sunday 15th of April 2012

Hi, so nice to meet you, thanks for leaving a comment and following along. I'll be sure to check out your site too. Have a great day!

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