If you want a bright, tangy dessert with a buttery shortbread base, this Old Fashioned Lemon Squares Recipe is a timeless favorite. Reminiscent of homemade, kitchen-table baking, these bars balance sweet and tart for a refreshing bite every time.
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Why This Recipe Works
- Quick and easy to prepare — perfect for warm-weather gatherings or an everyday treat.
- A simple shortbread crust that’s buttery and crisp, providing the ideal base for the lemon filling.
- The bright citrus filling is refreshing and not overly sweet, giving a clean, lively flavor.
If you enjoy lemon desserts, try other lemon recipes in your collection for variety.
What You Need For Old Fashioned Lemon Squares?
Lemons – Fresh lemons are recommended for juice and optional zest; bottled lemon juice can be used in a pinch.
Butter – Unsalted butter is preferred so you can control the salt; use salted butter and omit added salt if necessary.
How to Make Old-Fashioned Lemon Squares
- Step 1: Preheat the oven to 350°F (175°C). In a medium bowl, combine the crust ingredients and mix until a dough forms.
- Step 2: Press the crust evenly into an 8×8-inch baking dish prepared with nonstick spray or lined with parchment.
- Step 3: Bake the crust 20 minutes, until the edges are lightly golden.
- Step 4: While the crust bakes, whisk together the filling ingredients in a bowl. Pour the mixture over the hot crust.
- Step 5: Return to the oven and bake another 25–28 minutes, until the filling is set. Cool completely, then dust with powdered sugar and, if desired, extra lemon zest before slicing.
Substitutions and Variations
Fresh Lemon Juice vs. Store-Bought
Fresh lemon juice delivers the best, brightest flavor and allows you to add zest for more intensity. Store-bought lemon juice will work if needed but will produce a milder citrus note.
Other Citrus Options
Swap lemon for an equal amount of lime or grapefruit juice for a different citrus twist. Adjust zest accordingly for stronger flavor.
Frequently Asked Questions
Prebaking the crust prevents it from becoming soggy under the filling. A baked crust stays crisp and holds the bars’ structure.
Wipe the knife with a paper towel between cuts to keep slices neat and prevent the filling from smearing.
Cover the pan with plastic wrap or store bars in an airtight container in the refrigerator for 3–4 days for best freshness.
Yes. Cool completely, skip powdered sugar, wrap tightly in plastic wrap and foil, and freeze up to four months. Add powdered sugar after thawing.
Related Recipes You’ll Love
If you enjoy lemon squares, try other dessert bars and baked treats to expand your repertoire.
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Orange Buttermilk Scones Recipe
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S’mores Cookie Bars
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Homemade Grapefruit Cupcakes
-
Rice Krispies Treats Recipe
If you try this recipe, consider leaving a review and a comment to share how it turned out.
Video
Old Fashioned Lemon Squares Recipe
Ingredients
Crust
- 1 cup flour
- ¼ cup powdered sugar
- Pinch of salt
- ½ cup unsalted butter melted
- 1 teaspoon vanilla
Filling
- 1 cup sugar
- 3 tbs flour
- 3 eggs
- ½ cup lemon juice fresh (3–4 lemons)
- 1 tbs lemon zest optional
- Powdered sugar for garnish
Instructions
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Preheat oven to 350°F and prepare an 8×8-inch baking dish with nonstick spray or parchment.
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Combine the crust ingredients until a dough forms. Press evenly into the bottom of the prepared pan.
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Bake the crust 20 minutes, or until the edges begin to brown.
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While the crust bakes, whisk together the filling ingredients in a medium bowl.
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Pour the filling over the hot crust and bake 25–28 minutes more, until the center is set. Cool completely, then dust with powdered sugar and optional extra lemon zest before slicing.
Notes
- Leftovers: Refrigerate bars in an airtight container or covered pan for up to 3–4 days.
- Cutting: Wipe the blade between cuts for neat slices.
- Garnish: A light sprinkle of lemon zest lifts the presentation and flavor.