Add the flour, butter, sugar, and salt to a mixing bowl, mix until combined, and then press into an 8x8 baking dish.
Bake the crust
In a 325F / 162C preheated oven, bake the crust for 20 minutes. The crust provides support for the lovely lemon layer, and pre-baking the crust helps to make it nice and sturdy.
Make the topping
Then make the lemon bar topping by whisking together the eggs, sugar, lemon juice, lemon zest, flour, baking powder, and salt. Carefully pour on top of the pre-baked crust.
Bake the lemon bars
Place in the oven and bake for about 25 minutes, or until done.
Chill and serve
Allow the baking dish to cool on the counter for about an hour then chill in the refrigerator. Cut into squares and dust with some powdered sugar before serving.
Notes
You know the lemon bars are done when the filling looks set and the edges of the bar start turning that lovely golden color.
These are best baked in either a glass baking dish or a metallic dish lined with baking paper. Baking directly on metal can sometimes give a metallic taste to the bars.
There are 10 Blue Plan SmartPoints in one serving.