4 1/2 c. sugar
1 lg. can evaporated milk
8 oz. miniature marshmallows
1/2 c. butter
1 tsp. vanilla
18 oz. chocolate chips
2 c. chopped nuts

Use a heavy, large saucepan, put in the sugar and milk, bring slowly to a rolling boil. (Rolling boil means the liquid is bubbling very fast, not small bubbles). Let it boil for no longer than 8 minutes, stirring constantly to keep milk from scorching. Remove from heat and add miniature marshmallows, chocolate chips and butter. Stir until melted and blend in well. Add the nuts and vanilla. Spread on a large, ungreased pan and when cool, cut into squares.