Lemon Squares

This one is my mom's specialty, and she finally let me in on her (not so) secret recipe. I think I could eat a million of these.

For shortbread crust:
2 cups flour
1 cup butter (room temperature)
1/2 cup sugar

For lemony goodness:
2 cups sugar
4 eggs (beaten)
6 Tablespoons lemon juice
1 teaspoon lemon zest
1/2 teaspoon salt
4 Tablespoons flour
1 teaspoon baking powder

Powdered sugar (for sprinkling on top).

Preheat the oven to 325 degrees Fahrenheit.

Start by blending together the flour, butter, and sugar for the crust in a food processor. When the ingredients are well combined, press the mixture into a 11x9x2 inch pan. Pop in oven and bake for about 20-25 minutes, or until the shortbread is starting to turn slightly brown on top.

Next, mix together the sugar, eggs, lemon juice, lemon zest, salt, flour, and baking powder. Mix well, being sure there are no chunks of flour or sugar remaining. Pour the lemon mixture on top of the hot shortbread. Bake another 25 minutes. Removed from oven and cool thoroughly. Sift powdered sugar in a thin layer over the entire pan. Cut into squares and dive into lemon ecstasy.