These creamy lemon squares balance a buttery graham cracker crust with a smooth, tangy lemon filling. They are bright, refreshing, and rich without being heavy, making them perfect for gatherings, afternoon treats, or a simple make-ahead dessert.

Why You’ll Love This Recipe

This recipe is wonderfully simple yet delivers bakery-style results. The crust comes together in minutes, the filling uses just a few ingredients, and the lemon flavor is fresh and vibrant. It’s a reliable dessert that sets beautifully, slices cleanly, and tastes even better after chilling.

Ingredients

(Tip: You’ll find the full list of ingredients and measurements in the recipe card below.)

For the crust
1 ½ cups graham cracker crumbs
¼ cup granulated sugar
4 tablespoons unsalted butter, melted and cooled, plus extra for greasing the pan

For the lemon filling
2 large egg yolks
1 can (14 ounces) sweetened condensed milk
½ cup freshly squeezed lemon juice (from about 3 medium lemons)

Directions

Preheat the oven to 350°F (175°C). Lightly grease an 8-inch square baking pan and set aside.

In a medium bowl, combine the graham cracker crumbs and granulated sugar. Pour in the melted butter and mix until all the crumbs are evenly moistened.

Press the crumb mixture firmly and evenly into the bottom of the prepared pan, using the back of a spoon or the bottom of a glass.

Bake the crust for 10 minutes, or until lightly golden and set. Remove from the oven and keep warm.

In a separate bowl, whisk the egg yolks until smooth. Add the sweetened condensed milk and whisk until fully combined. Slowly whisk in the fresh lemon juice until the mixture is creamy and uniform.

Pour the lemon filling over the warm crust and spread it evenly with a spatula.

Return the pan to the oven and bake for 14 to 16 minutes, or until the filling is just set and no longer jiggly in the center.

Remove from the oven and allow to cool completely at room temperature. Refrigerate for at least 2 hours before slicing into squares.

Servings and timing

Servings: 9 squares

Prep time: 15 minutes
Bake time: 24 to 26 minutes
Cooling and chilling time: about 2 hours
Total time: approximately 2 hours 45 minutes

Variations

For a stronger citrus flavor, add 1 teaspoon of finely grated lemon zest to the filling.
For a mixed citrus version, replace half of the lemon juice with fresh lime juice.
For a crunchier crust, add 2 tablespoons of finely chopped nuts to the graham cracker mixture.
For a lighter topping, dust the chilled squares with powdered sugar just before serving.

Storage/Reheating

Store the lemon squares in an airtight container in the refrigerator for up to 5 days.
For longer storage, freeze the squares in a single layer, then transfer to a freezer-safe container for up to 2 months. Thaw overnight in the refrigerator before serving.
These bars are best enjoyed chilled and do not require reheating.

FAQs

Can I use bottled lemon juice instead of fresh?

Fresh lemon juice is recommended for the best flavor, but bottled juice can be used if needed.

How do I know when the filling is set?

The center should look firm and only slightly jiggle when gently shaken.

Can I make this recipe ahead of time?

Yes, these lemon squares are ideal for making a day in advance and chilling overnight.

What pan size works best?

An 8-inch square pan gives the perfect thickness for both crust and filling.

Can I double the recipe?

Yes, double the ingredients and use a 9×13-inch pan. Adjust baking time slightly as needed.

Why did my crust crumble when slicing?

The bars may not have been chilled long enough. Chilling helps them firm up and slice cleanly.

Can I use whole eggs instead of yolks?

Egg yolks provide a creamier texture. Using whole eggs may change the consistency.

How do I get clean slices?

Use a sharp knife wiped clean between cuts for neat edges.

Can I add a topping?

A light dusting of powdered sugar or a dollop of whipped cream works well.

Are these lemon squares very sweet?

They are balanced with a creamy sweetness and a bright lemon tang, not overly sweet.

Conclusion

Creamy lemon squares are a timeless dessert that combines simplicity with bold flavor. With their smooth texture, buttery crust, and refreshing citrus bite, they are sure to become a favorite recipe you’ll return to again and again. Whether for a celebration or a quiet treat at home, these bars always deliver.

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