HEAT oven to 325°F. WHISK sweetened condensed milk, milk, eggs, vanilla and lemon juice in medium bowl until well blended. Pour into pie crust.
BAKE 50 to 55 minutes or until custard is set in center. Cool completely on wire rack. Cover and refrigerate until serving time.
COMBINE brown sugar, corn syrup, butter and milk in saucepan over medium heat. Cook until mixture comes to a boil, stirring constantly. Boil 1 1/2 to 2 minutes, stirring constantly. Remove from heat. Stir in pecans and vanilla. Pour over cooled pie. Serve immediately.