Classic Lemon Bars
(Makes about 12 bars)
1/2 c. cold butter
1 c. all-purpose flour
1/4 c. confectioner's (powdered) sugar
1 Tbsp. lemon zest
1 c. granulated sugar
juice and remaining zest of 2 lemons
2 Tbsp. flour
pinch of salt
1/4-1/2 c. confectioner's sugar for dusting
Preheat oven to 350°F. Line an 8x8 pan with parchment paper, or aluminum foil sprayed with oil (do not skip this! it's key to getting the bars out of the pan in one piece).
Zest 2 fresh lemons. Measure out 1 Tbsp. for the crust. Set the remaining zest aside for the filling.
To make the crust, cut the butter into flour and confectioner's sugar until crumbly. Stir in 1 Tbsp. lemon zest. (If you have a food processor, pulse the butter, flour, confectioner's sugar and lemon zest together for 10-15 seconds until crumbly and sand-like.) Press mixture into parchment- or foil-lined pan. Bake at 350°F for 20 minutes until light brown.
Meanwhile, juice your previously-zested lemons. Combine lemon juice, remaining zest, eggs, granulated sugar, 2 Tbsp. flour and pinch of salt. Whisk until smooth.
As soon as the crust comes out of the oven, pour the topping over the top. Return the pan to the oven and bake another 25 minutes until lemon topping is set. (Don't worry if it gets brown in some areas - the confectioner's sugar you add before serving will cover this up.)
Let sit 15 minutes. Remove the entire "cake" by lifting up on the sides of the parchment paper or foil. Set on a wire rack or cool counter to finish cooling.
Cool completely before cutting.
Just before serving, dust generously with confectioner's sugar. (A small sifter works well for this. One warning: don't add the confectioner's sugar too early, or it will just get absorbed by the lemon layer.)
Enjoy the lemony goodness!