Lemon Squares (very pretty and the lemon flour is sweet, but the fruit of the poor lemon is impossible to eat)...

Gather crust ingredients (while humming along to Peter, Paul & Mary):

1/2 cup butter/margarine

1/4 cup confectionery sugar

1 cup flour

Let's do this!
Mix butter/margarine, confectionery sugar and flour in a bowl (Reet suggests the Rose Bowl, the granddaddy of them all). Place mixture into 9-inch square pan. Do NOT grease pan! Oh, you already did? My bad, I should have told you earlier. Deal with it. Build up the pan (it's good for the pan's self-esteem). Bake at 325 degrees for 15 minutes.

While the crust is baking...
Assemble:

2 eggs

1 cup sugar

2 tablespoons flour

1/2 teaspoon baking powder

rind of one lemon

juice of one lemon

first offspring of one lemon (okay, okay, just kidding)

Hurry, we only have 15 minutes!
Beat all of the above in another bowl (you've already used the Rose, so I'd go for the prestigious Meineke Car Care Bowl) and then pour over crust. Put back into oven and bake at 350 degrees for 25 minutes. (VERY IMPORTANT! Be CAREFUL not to let oven get to 360 degrees, because you will be right back where you started!)

You're done! Cut into squares, serve and volley.