In a skillet over medium-low heat, add pecans and butter. Toast, stirring occasionally, until pecans are lightly browned, about 3 minutes. Add a pinch of salt to pecans while hot. Remove from heat and allow to cool while preparing ice cream base.
Mix together heavy cream and milk. Add in brown sugar, vanilla and salt. Stir in cooled butter pecan mixture. Add to container of ice cream maker and make according to ice cream maker instructions.
Serve immediately or remove from container and place in freezer for about an hour to harden.