Once your butter is browned in saucepan, pour it into a heat safe bowl with both sugars and vanilla, stirring well.

Let cool a bit then add eggs, one at a time.

Stir in sour cream well.

Fold in dry ingredients and then stir in chips.

Chill overnight or a few hours.

Remove to counter until soft enough to scoop.

Scoop 3 ounce mounds and bake at 350 for 15 mins,

Remove from heat and add additional chips on top.

Let cool on tray.