3 c. sugar
3/4 c. butter
2/3 c. canned milk
1 (12 oz.) pkg. semi-sweet chocolate chips
1 (7 oz.) jar marshmallow creme
1 c. chopped nuts (optional)
1 tsp. vanilla

Combine sugar, butter, and milk; bring to rolling boil, stirring constantly. Boil 5 minutes over medium heat or until candy thermometer reaches 238 degrees, stirring constantly. Remove from heat; stir in chocolate until melted. Add marshmallow cream, nuts, and vanilla. Beat until well blended. Pour into greased 13 x 9 inch pan. Cool and cut into squares.