Creamy Peanut Butter Fudge

While at the cabin, my sister requested some recipes from my recipe book. This is one of them:

Creamy Peanut Butter Fudge- 9x13 pan
4 c. white sugar
1 c. brown sugar
1/2 c. butter
1 (12 oz.) can evaporated milk
1 (7 oz.) jar marshmallow creme
1 (16 oz.) jar peanut butter
1 tsp. vanilla

Grease a 9x13 pan. In a medium saucepan over medium heat, combine sugars, butter and evaporated milk. Bring to a boil, stirring constantly. Boil for 7 minutes. Remove from heat. Stir in marshmallow creme until smooth and well incorporated. Stir in peanut butter and vanilla until smooth. Spread in prepared pan. Let cool before cutting into squares.