Preheat the oven to 375 degrees F. Set aside at least 4 ramekins.
In a small bowl, combine the flour, salt, baking powder, and baking soda; mix to combine.
In the bowl of an electric mixer fitted with the paddle attachment, cream together the butter and sugars until well blended and fluffy. Add egg and vanilla and beat until well incorporated. Add dry ingredients and mix until combined. Fold in chocolate chips and Snickers.
Fill the ramekins about 3/4" deep with cookie dough. Set ramekins on a baking sheet and bake on the middle rack of the oven for 14-16 minutes, or until the top is just slightly golden brown. You want to aim for slightly underbaked cookies.
Allow to cool slightly, top with ice cream and serve. Be careful because the ramekins will still be very hot.
Notes
Depending on the size of your ramekins, you may have bigger or smaller pies. I use 4" ramekins and make about 4 small pies.