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Lemon Squares with Kalamansi

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Twenty luscious Lemon Squares with Kalamansi are cooling on the counter, waiting to be wrapped. I just baked them. The lemon and lime aroma filled the kitchen, traveled through the ceiling towards the dining room, like a north star drawing you to the dessert. The bars were golden yellow, sprinkled with sweet confectioners’ sugar. They tasted tart-like, yet had a sweet shy savory flavor. They’re lemon – kalamansi bars, and I baked them for a family birthday.

I have been baking lemon bars, or what some refer to as lemon squares for as long as eternity. I have tried different recipes. But one thing remains the same. I always bake it at this time of the year, more than any other time.

Years ago, in the Philippines, I used kalamansi, the Filipino lime, for these dessert bars. The Filipino kalamansi are small round citrus fruits, with a dark green outer skin and an orange-yellow flesh inside. From these tiny spheres came the most piercing limey aroma, that was sweeter than a regular American lemon, the latter having more tart traits.

The Filipino kalamansi is a staple in nearly every Philippine household. Its short tree shrub grows abundantly in many backyards around the country. It has versatile uses, too. The kalamansi is used as an ingredient for dishes, as a flavoring for baking, as a refreshing addition to beverages, and even makes its way to medicinal uses, or home remedies, and even as a cleaning or bleaching agent on fabrics.

Back here in my American kitchen, I have access to frozen kalamansi concentrate from the Asian groceries. I combined it with fresh lemons which are sweetest in the summer here in the east coast.  When I merged and mingled both citrus fruit flavors, the result on these lemon-kalamansi bars was irresistible.

As I sliced them, the bright golden yellow bars were soft, moist, dewy with a delicate lemony-limy scent. The gel-like centers were delightfully encased on a beautiful bottom of buttery, flakey crust. When I lifted the entire bar from the pan it was baked in, tiny crumbs of the crust carelessly fell off on the sides. But the lemon- kalamansi bar stayed firm and marvelous, ready to be devoured by my oldest son, Tim, who celebrates his birthday today. And you are reading this blog because of Tim. He is the brains behind this site’s sleek design. He is the oldest of my wonderful sons, and both have helped and inspired me to write my food sites. He loves and lives for these lemon – kalamansi bars, most especially this time of year, his birthday.

Happy Birthday, Tim !

Lemon Squares with Kalamansi

These bright golden yellow Lemon Squares with Kalamansi were soft, moist, dewy with a delicate lemon and lime scent.They were made from freshly squeezed lemons and its zest, and pure, concentrated kalamansi, the Filipino lime. At the bottom is a buttery, flakey crust that crumbles in your mouth. This is the best time of the year to bake these citrus bars. The lemons are sweetest right about now, thus making this a perfect summer treat. This is an Asian in America recipe by Elizabeth Ann Besa-Quirino. Makes 18 to 20 pieces.
Prep Time30 minutes
Cook Time1 hour
Total Time1 hour 30 minutes
Course: Dessert, Snacks
Cuisine: American, Asian, Filipino
Keyword: Filipino Lemon Kalamansi Squares
Servings: 18 to 20 pieces
Calories: 284kcal
Author: Asian in America by Elizabeth Ann Besa Quirino


  • Baking pan: 9 x 13 inches


  • 2 cups all-purpose flour for crust
  • 1 cup confectioner's sugar for crust
  • 1/2 cup cornstarch
  • 1/2 teaspoon salt
  • 1 cup unsalted butter cold and cut into small pieces
  • 8 whole eggs
  • 3/4 cup fresh lemon juice from about 8 large lemons
  • 1/4 cup calamansi juice frozen or from fresh fruit
  • 1/2 cup all-purpose flour for filling
  • 3 Tablespoons lemon zest
  • 1 teaspoon organic lemon extract
  • 1 teaspoon baking powder
  • 1 teaspoon baking soda
  • 2 to 3 Tablespoons confectioner's sugar for sprinkling on bars
  • 2 cups granulated sugar for the lemon-calamansi filling


  • Preheat oven to 350 F degrees.
    Pre-grease a 9 inches x 13 inches baking pan with baking spray.
  • How to prepare the crust: In a food processor, combine the 2 cups flour, confectioners' sugar, cornstarch and salt. Add the cold butter. Pulse till it resembles coarse crumbs. Press this mixture to the bottom of the baking pan. Refrigerate for 10 minutes to firm up.
  • Bake the crust for 20 minutes in a 350 F degrees, till lightly brown.
    Remove from the oven and reduce oven temperature to 325 F degrees.
  • Make the lemon filling : Beat the eggs in mixer till thick. Blend in granulated sugar, lemon and calamansi juices, and the zest.
  • Add the 1/2 cup flour, baking powder and soda. Last, add the lemon extract. Mix well. Pour the filling into the crust and bake for 38 to 40 minutes at 325 F degrees or test with a knife to see if it is done. If knife comes out clean, then lemon-calamansi squares are cooked.
  • Remove from oven and cool on counter for at least 40 minutes or till thoroughly at room temperature.
    Sprinkle the top with confectioner's sugar after the entire dessert has cooled or else sugar topping will melt.
    Cover with plastic wrap and refrigerate at least two hours or overnight. Slice in equal-sized square bars, about 2 inches x 2 inches.
  • Cook's comment: If calamansi is not available, substitute the same amount with fresh lemon juice.
  • Hello, Friends! All the images and content on this blog are COPYRIGHT PROTECTED and owned by my media company Besa-Quirino LLC. This means BY LAW you are NOT allowed to copy, scrape, lift, frame, plagiarize or use my photos and  recipe content I wrote, on your website,books, films, television shows or videos  without my permission. If you want to republish this recipe or content on another website, video, news article,or media outlets mentioned above please ASK my permission, re-write it in your own words and simply link back to this blog to give proper attribution. It’s the legal thing to do. Thank you. Email me at [email protected]


Serving: 1g | Calories: 284kcal | Carbohydrates: 47g | Protein: 2g | Fat: 10g | Saturated Fat: 7g | Cholesterol: 29mg | Sodium: 129mg | Potassium: 44mg | Fiber: 1g | Sugar: 30g | Vitamin A: 315IU | Vitamin C: 1mg | Calcium: 16mg | Iron: 1mg

Nutrition Notes: The nutrition information provided is an estimate and will vary based on cooking or baking methods and brands of ingredients used.

Did you love this recipe? I have more Philippine dessert recipes in my popular cookbook How to Cook Philippine Desserts, Cakes and Snacks.

If you need Filipino Instant Pot recipes, find more in my newest cookbook Instant Filipino Recipes: My Mother’s Traditional Philippine Cooking in A Multicooker PotBuy my cookbooks and books on Amazon.com sold worldwide in paperback and Kindle format.

Hello, Friends! Please DO NOT LIFT OR PLAGIARIZE my original recipe, stories, photos or videos. All the images and content on this blog are COPYRIGHT PROTECTED and owned by my media company Besa-Quirino LLC. This means BY LAW you are NOT allowed to copy, scrape, lift, frame, plagiarize or use my photos, essays, stories and recipe content on your websites, books, films, television shows, videos, without my permission. If you wish to republish this recipe or content on media outlets mentioned above, please ASK MY PERMISSION, or re-write it in your own words and link back to my blog AsianInAmericaMag.com to give proper attribution. It is the legal thing to do. Thank you. Email me at [email protected].

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  1. Happy Birthday Tim! You are doing amazing job behind this blog. Keep up good work because your mom’s site looks awesome! Filipinos know how to cook and bake, and they do really good job. Love citrus in sweets. Lovely dessert!

    1. Hi, Nami !Thanks for the birthday greetings to Tim! Yes,he’s done a great job with the blog’s web design. It’s what he does for a living. Glad you came by.

  2. happy birthday to TIM. My son loves this lemon squares. Over at dinner table today he remembered our neighbor in FL who baked these goodies and how he loved them. Now he is telling me that I should make them. I haven’t baked lemon squares yet but with my son being home, that will change soon.
    thanks for sharing!

    1. Hi, Malou! Thanks for the birthday greetings ~ Tim will be thrilled ! And yes, you must try making Lemon Squares. Yours will surely turn out terrific & I’m positive your son will love it, too! Glad you stopped by. Thanks for the blog-love 🙂

  3. Hi, made these bars last night and noticed that your recipe for granulated sugar for the filling and water for the crust were omitted from your recipe. Could you please update this? Thanks!

    1. Thanks for visiting the blog, Grace. The granulated sugar has been on the list of ingredients ever since and in the procedure (please see Make the Lemon Filling). Water is not an ingredient in this recipe. Hope that helps.

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