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

Microwave butter in 4 quart bowl on high 1 minute. Add sugar and milk; mix well. Microwave on High 5 minutes (until boiling) and stir after 3 minutes. Mix well and scrape bowl. Continue microwaving 5 1/2 minutes and stir after 3 minutes. Add chips and stir until melted. Add remaining ingredients and mix well. Pour into greased 13 x 9 inch pan. Cut into squares when cooled.