Best Lemon Bar Recipe Ever!

Ingredients:
1/2 cup powdered sugar
2 sticks butter, softened
2/1/2 cups  flour, divided
4 eggs
2 cups sugar
1/3 cup freshly squeezed lemon juice
1 Tablespoon freshly grated lemon zest
1/2 teaspoon baking powder

Step 1: Preheat oven to 350 degrees and lightly grease 9x13 pan
Step 2: Cream the powdered sugar and butter together until it is light and fluffy.  Add 2 cups of the flour, beat until mixed.
Step 3: Press the flour mixture into the bottom of the 9x13 pan and bake for 15 minutes or until golden brown.
Step 4: Beat the eggs, sugar, lemon juice and zest in a large bowl.  Add the remaining 1/2 cup of flour and baking powder into the mixture and mix well. 
Step 5: Pour over the crust and return to the oven to bake for an additional 20 minutes.
Step 6: Cool completely, then sprinkle/sift additional powdered sugar on top of bars.  Store bars in fridge until ready to serve.