Chocolate Caramel Shortbread Bars (Copycat TwixTM Bars)

Instructions

1. 1

   With the rack in the middle position, preheat the oven to 400°F (200°C). Butter an 8-inch (20 cm) square pan and line with a strip of parchment paper, letting it hang over two sides.

2. 2

   In a bowl, combine the flour and salt.

3. 3

   In another bowl, cream the butter, sugar and vanilla with an electric mixer. Add the egg yolks one at a time and mix until smooth. Using a wooden spoon, add the dry ingredients. The mixture will be crumbly. With the tips of your fingers, press the mixture into the bottom of the prepared pan.

4. 4

   Bake for 12 to 14 minutes or until golden. Let cool for 30 minutes.