If you’ve ever struggled with runny filling or a soggy crust, this No‑Fail Lemon Bars Recipe is the one you need! These bars come out perfect every time with a buttery shortbread crust and a smooth, tangy lemon filling that sets beautifully!

Bright, Zesty Lemon Bars That Melt in Your Mouth !

It’s even more entertaining when I am reminded the canisters in my pantry are actually labeled ‘flour’ and ‘powdered sugar!’ Even the most obvious mistakes can’t be avoided sometimes!

I absolutely love this recipe, the shortbread crust is so buttery and fantastic! These sweet and tangy bars scream Spring with lemon packed in every bite!

Why this Recipe Works

Perfect Sweet-Tart Balance – The combination of bright lemon juice and sugar creates that signature flavor – refreshing, tangy, and not overly sour.

Flour Thickens the Filling – A small amount of flour helps stabilize the mixture so the bars slice cleanly instead of falling apart.

Two Layers that Complement Each Other – The rich, buttery crust contrasts perfectly with the smooth, citrusy filling, giving you the ideal mix of textures in every bite!

Fresh lemon bars with buttery crust and citrus filling

Ingredients You’ll Need for the Crust

1 cup Butter (Softened) – Creates a rich, tender base and gives the crust its buttery, melt-in-your-mouth texture.

2 cups Flour – Provides structure and forms the sturdy shortbread-style crust.

1/2 cup Powdered Sugar – Adds a light sweetness while keeping the crust soft and delicate (instead of gritty).

1/2 tsp Salt – Balances the sweetness and enhances the buttery flavor.

And the Lemon Layer

4 Eggs – Gives the filling its smooth, custard-like texture and help it set properly.

5-6 tbsp Lemon Juice – Brings bright, fresh citrus flavor and that signature tangy taste.

1 3/4 cups Sugar – Sweetens the filling and balances the tartness of the lemon juice.

1/3 cup Flour – Thickens the lemon layer so it sets into a soft, sliceable filling.

Classic lemon bars with bright yellow filling

How to Make Lemon Bars

Preheat oven to 375 degrees. Spray 9 x 13 glass pan with non-stick spray and set aside.

In a medium size bowl, make the crust by mixing together 1 cup softened butter, 2 cups flour, 1/2 cup powdered sugar, and 1/2 tsp salt with a pastry cutter. Press into prepared pan evenly and bake for 20 minutes.

In the meantime, make the lemon curd by beating together 4 eggs, 5-6 tbsp lemon juice, 1 3/4 cups sugar, and 1/3 cup flour until frothy. After the crust has baked for 20 minutes, remove from oven and pour lemon curd mixture evenly over the crust.

Bake for an additional 18 minutes. They are done when the edges begin to turn golden brown and the middle is set and doesn’t jiggle.

Let cool completely in the pan. Sift powdered sugar over the top before cutting into squares.

Don’t Overmix the Crust – Mix until just combined. Overmixing will create a tough, dense crust.

Let Completely Cool Before Cutting – Warm bars are messy and runny. Make sure to chill for at least 1-2 hours before cutting, this helps the filling fully set and slice clean.

Dust Powdered Sugar Right Before Serving – Adds sweetness and contrast and won’t melt into the bars if done at the last minute.