Preheat the oven to 350 degrees.
Line several baking sheets with parchment. It's important to not put the dough on a hot baking sheet- so if you are rotating sheets, make sure they have cooled before adding more dough.
In the mixer bowl, combine flour, sugar, brown sugar, baking soda, and salt.
Stir in the melted butter & vanilla until the mixture is crumbly.
Beat in the eggs, followed by the oats until mixed well.
Fold in the chopped Snickers bars and chocolate chips - reserving some to top the cookies with after baking.
Taking tablespoon-size portions, scoop the dough and roll it into balls and place the balls on a lined baking sheet approx 2 inches apart.
Bake 8-10 minutes- or until golden & the edges are set.
Remove and immediately top with a few chocolate chips per cookie while they are hot.
Allow to cool on the baking sheet for several minutes before transferring to a wire rack to cool completely.
Store in an airtight container at room temperature.