Mix butter, add cake mix, eggs & water. Mix well with hand mixer.
Add toffee bits and pecans, mix by hand. If you like lots of nuts, feel free to add 3/4 to 1 Cup of pecans.
Spoon onto ungreased cookie sheet and bake at 350* for 10 minutes for small cookies. For larger cookies bake for 12-13 minutes. Transfer to cooling rack. They won't look done, but when they cool, they solidify, still being a soft chewy cookie.