These creamy lemon squares bring together a buttery graham cracker crust and a smooth, tangy lemon filling for a dessert that feels bright, comforting, and indulgent all at once. They are easy to prepare, require simple ingredients, and deliver a perfectly balanced sweet-and-tart flavor in every bite.

Why You’ll Love This Recipe

These lemon squares are simple enough for beginners yet impressive enough for gatherings. The crust is crisp and lightly sweet, while the lemon filling is silky, creamy, and refreshing. They set beautifully without being dense, slice cleanly, and taste even better after chilling, making them ideal for make-ahead desserts.

Ingredients

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

For the crust

• Unsalted butter, melted and cooled: 4 tablespoons, plus a small amount for greasing the pan
• Graham cracker crumbs: 1 1/2 cups
• Granulated sugar: 1/4 cup

For the lemon filling

• Large egg yolks: 2
• Sweetened condensed milk: 1 can (14 ounces)
• Fresh lemon juice: 1/2 cup (from about 3 medium lemons)

Directions

Preheat the oven to 180°C (350°F). Lightly grease an 8-inch square baking pan with butter.

In a medium bowl, combine the graham cracker crumbs and sugar. Add the melted butter and mix until the crumbs are evenly moistened. Press the mixture firmly into the bottom of the prepared pan to form an even layer. Bake for 10 minutes, then remove from the oven and let it cool slightly.

In another bowl, whisk the egg yolks until smooth. Add the sweetened condensed milk and whisk until fully combined and creamy. Slowly pour in the fresh lemon juice while whisking, and continue mixing until the filling becomes thick, smooth, and glossy.

Pour the lemon filling over the warm crust and spread it evenly. Return the pan to the oven and bake for 12 to 15 minutes, just until the filling is set but still slightly soft in the center.

Remove from the oven and allow the pan to cool at room temperature. Refrigerate for at least 2 hours, or until fully chilled. Once chilled, cut into squares and serve.

Servings and timing

Servings: 9 squares

Preparation time: 15 minutes
Baking time: 25 minutes
Chilling time: 2 hours
Total time: approximately 2 hours 40 minutes

Variations

For a stronger citrus flavor, add 1 teaspoon of finely grated lemon zest to the filling.
For a sweeter version, dust the chilled squares lightly with powdered sugar before serving.
You can substitute digestive biscuit crumbs for graham cracker crumbs if desired.
For a slightly thicker filling, add one extra egg yolk and bake for an additional 2 minutes.

Storage/Reheating

Store the lemon squares in an airtight container in the refrigerator for up to 4 days. For best texture, serve them chilled straight from the fridge. These squares do not require reheating, as warming can cause the filling to soften too much.

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 necessary.

How do I know when the lemon filling is set?

The filling should look firm around the edges and slightly soft in the center, without liquid movement.

Can I make these lemon squares ahead of time?

Yes, they are ideal for making a day in advance and chilling overnight.

What size pan works best for this recipe?

An 8-inch square pan provides the best thickness and texture.

Can I freeze creamy lemon squares?

Yes, freeze them tightly wrapped for up to one month. Thaw overnight in the refrigerator before serving.

Why is my filling too runny?

This can happen if the squares are underbaked or not chilled long enough.

Can I double the recipe?

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

Do I need to line the pan with parchment paper?

It is optional, but parchment paper makes removing and slicing the squares easier.

Can I reduce the sweetness?

You can slightly reduce the sugar in the crust, but the filling relies on condensed milk for structure and sweetness.

How should I cut clean squares?

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

Conclusion

Creamy lemon squares are a timeless dessert that combines ease, elegance, and refreshing flavor. With a crisp crust and smooth lemon filling, they are perfect for gatherings, celebrations, or a simple homemade treat that feels special every time.

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