Pre-heat 350F/180C. Line an 8-9 inch / 20-23 cm square cake pan with parchment paper.
In a large bowl or stand mixer cream the butter, vanilla and sugar, approximately 2 minutes, add the flour and salt and combine to form a soft dough.
Spread the dough evenly in the pan and bake for 20-25 minutes or until golden brown. Remove from the oven and immediately sprinkle with the chopped chocolates, let melt then spread evenly, sprinkle with the chopped nuts. Let cool, chill 1-2 hours then cut and serve. Enjoy!
Notes
How to store the Chocolate pecan shortbread bars?
Store: I prefer to store the bars in the refrigerator in an airtight container for up to 5 days, but they could be stored at room temperature as well. Freeze: You can also store the brown sugar shortbread bars in the freezer for up to 3 months. Cool completely then wrap individually in plastic wrap and store in a freezer safe bag. Thaw at room temperature.