1. Make the Crust:

Preheat the oven to 350°F (175°C).

Grease a 13-by-9-inch pan with butter. (Use an 8-by-10-inch pan if you’d like the layers to be a little thicker.)

In a large bowl, stir together the all-purpose flour, granulated sugar, and salt.

Add the cubed, cold butter.

Use a pastry cutter (or your fingers) to cut the butter into the flour mixture until it resembles fine crumbs. The butter should be evenly distributed.

Press the mixture into the prepared pan.

Bake until golden around the edges, about 20 minutes.

2. Make the Filling:

While the crust is baking, make the filling.

In a medium bowl, stir together the granulated sugar and all-purpose flour.

Crack in the eggs.

Whisk to combine until smooth.

Add the lemon zest and fresh lemon juice.

Mix until everything is well combined.

3. Pour Filling over Crust: Pour the lemon filling over the warm, pre-baked crust.

4. Bake:

Return the pan to the oven and bake until the filling is set, about 20 minutes more.

5. Cool and Chill:

Allow the lemon bars to cool completely in the pan.

Then, refrigerate for a minimum of 2 hours to allow the filling to firm up.

6. Top and Serve: Once chilled, sift powdered sugar generously over the top of the cooled lemon bars.

Cut into squares and serve. Enjoy your delicious, homemade Lemon Bars!