3/4 c. butter
3 c. sugar
1 (5 oz.) can evaporated milk
1 (12 oz.) pkg. chocolate chips
1 (7 oz.) jar marshmallow fluff
1 c. chopped nuts (optional)
1 tsp. vanilla

Microwave butter in 4 quart bowl on high 1 minute until melted. Add sugar and milk; mix well. Microwave on high 5 minutes; stir after 3 minutes. Mix well. Microwave on high for 5 1/2 minutes; stir after 3 minutes. Stir in chocolate chips until melted. Add remaining ingredients. Pour into greased 13 x 9 inch pan. Cool at room temperature. Cut into squares.