1. Preheat the Oven:
- Preheat your oven to 350°F (175°C). Grease a 9×13-inch baking dish and line it with parchment paper for easy removal.
2. Make the Crust:
- In a mixing bowl, beat the butter and sugar together until creamy.
- Add the flour and salt, and mix until the dough comes together.
- Press the dough evenly into the bottom of the prepared baking dish.
- Bake for 18-20 minutes, or until the edges are lightly golden.
3. Prepare the Lemon Filling:
- In a separate bowl, whisk together the eggs, sugar, and flour until smooth.
- Stir in the lemon juice and zest, mixing well.
4. Assemble and Bake:
- Pour the lemon filling over the warm crust.
- Bake for an additional 20-25 minutes, or until the filling is set and no longer jiggles in the center.
5. Cool and Dust:
- Let the bars cool completely in the pan. Refrigerate for at least 1 hour for easier slicing.
- Dust with powdered sugar before cutting into squares or rectangles.
6. Serve:
- Serve chilled or at room temperature for a refreshing treat.