Step 1

Preheat oven to 350 degrees. Line the bottom & sides of 8x8 baking pan with parchment paper.

Step 2

Cut cold butter into chunks and place in a food processor with flour, powdered sugar and salt. Pulse until fine crumbs are formed.

Step 3

Press shortbread into bottom of baking pan and bake for 20 minutes.

Step 4

In a mixing bowl combine all the filling ingredients. Whisk well.

Step 5

Pour filling over hot crust. Bake bars for 20-22 minutes until the center no longer jiggles.

Step 6

Allow bars to cool completely before dusting with powdered sugar. Cut into 16 squares.