• Preheat oven to 350°.

For the Crust:

• Mix flour and powdered sugar together.
• Add butter and mix with a fork until butter is about pea-sized and mixture is crumbly.
• Press into bottom of a 13 x 9 inch pan.
• Bake for 20 minutes.

For Filling:

• Add sugar, flour, eggs, and lemon juice into a bowl and mix well.
• Pour over baked crust.
• Return to oven and bake 25-30 minutes.
• Remove from oven and cool completely on a wire rack.

For Icing:

• Add cream cheese and butter to the bowl of an electric mixer. Beat until fluffy, about 2 minutes. Add powdered sugar and beat on low until just combined. Raise to medium-high speed and beat another 2 minutes, scraping down the sides. Add lemon juice and mix until well incorporated. Spread over cooled bars.
• Cut into squares to serve.
• Leftover bars may be refrigerated but will need to come to room temperature for slicing.