Preheat oven to 350 F degrees.
Melt butter in the microwave for 30 seconds, it should only melt a third of the way.
In the bowl of your mixer add the melted butter, brown sugar, milk, vanilla extract and mix for about 3 to 5 minutes until light and fluffy. Add the egg and mix until well incorporated.
In a bowl mix together the flour, salt and baking soda. Slowly add the flour mixture, half a cup at a time and mix on slow speed, scraping the sides as needed. Add more flour, a tbsp at a time if mixture is too soft.
Add the butterscotch chips, chocolate chips and pecans and mix until well incorporated.
Using 1/4 cup measuring cup, scoop out 1/4 cup of the cookie dough at a time, roll into a ball and place on an ungreased cookie sheet. Repeat with remaining cookie dough, make sure you leave enough space between the cookies, about 3 inches.
Top the cookies with additional chocolate, butterscotch chips and pecans, so they'll look beautiful.
Bake for 9 to 11 minutes, additional minutes may be required because of size of cookies, so bake until lightly golden, no more than 13 minutes.