Preheat your oven to 325 degrees and line two cookie sheets with parchment paper.
In a large bowl, beat together the cold butter and powdered sugar until combined. Since the butter is cold, you might need a few more minutes than you are used to for mixing time. Beat in the vanilla extract.
Add in the flour and salt slowly, beating until the dough forms. It will be slightly crumbly, but should completely combine. Beat in the toffee bits until combined.
Roll the dough on a lightly floured surface to about 1/4 inch thick. Cut the dough into whatever shapes you like- I did rectangles- and poke holes over the top with a fork. Transfer dough to your prepared cookie sheets.
Bake for 8-10 minutes or until the edges just start to become lightly golden. Cool on the cookie sheets completely. Dip into the chocolate or drizzle chocolate on top of cookies. Place the cookies on parchment or wax paper to let the chocolate set. Enjoy!