2In a medium saucepan over medium heat, combine sugar, brown sugar, butter and evaporated milk. Bring to a boil, stirring constantly, and boil for 7 minutes. Remove from heat; stir in marshmallow creme until well incorporated and melted. Stir in peanut butter and vanilla until smooth; spread in prepared pan. Let cool before cutting into squares.
Footnotes
Tip
Aluminum foil can be used to keep food moist, cook it evenly, and make clean-up easier.