Preheat oven to 375°F and line baking sheets with parchment paper.
In the bowl of a stand mixer, cream the butter, brown sugar and sugar until light and fluffy.
Stir in the egg and vanilla.
Mix in the salt, baking soda and flour until well-combined.
Stir in the chocolate chips and toffee bits.
Scoop the dough onto the parchment-lined baking sheets and bake one sheet at a time for 9-11 minutes.
Cool on a wire rack.
