1 (12 oz.) pkg. Reese's peanut butter chips
3/4 c. evaporated milk
1/4 c. butter
2 1/4 c. sugar
1 (7 oz.) jar marshmallow creme
1 tsp. vanilla

Butter an 8 inch square pan. Combine milk, butter, sugar and marshmallow creme in heavy 2 3/4 quart saucepan. Cook over medium heat until mixture begins to boil, stirring constantly; continue cooking and stirring 5 minutes. Remove from heat. Stir in vanilla. Immediately add peanut butter chips, stirring until completely melted. Pour into prepared pan.