Preheat oven to 375 degrees F.
Line a baking sheet with parchment paper or a silicone liner.
In a large mixing bowl beat until creamy; softened butter, granulated sugar, and brown sugar.
Add eggs and vanilla and mix well.
Stir in flour, baking soda, and salt. Mix to fully combine, but don't over mix or cookies will be tough.
Fold in chocolate chips and toffee.
Drop 2 tablespoons of dough onto the cookie sheet and top with a chocolate candy square, slightly pushing the chocolate square down.
As an option you can add a mini marshmallow inside the cookie dough.
Bake cookies for 11-13 minutes. If you use a convection setting bake at 350 for 9-10 minutes. Ovens may vary.
Remove from oven and let the cookies rest 2-3 minutes before transferring them to a wire rack.
Do not store cookies before they reach room temperature.
Store cookies in an airtight container or freeze for longer storage.