Beat butter and sugars until fluffy.
Add eggs & vanilla.
On low, add dry ingredients.
Fold in chips.
Chill 30 mins.
Preheat oven 350.
Line baking sheet with parchment paper.
Place large mounds on cookie sheet and bake 9-11 mins.
Do not over bake!
When removed from the oven, immediately sprinkle on more chips and place a few Snickers pieces on each one.