2 c. sugar
3 tbsp. butter
1 c. evaporated milk
1 c. marshmallows (optional)
1 1/2 c. chunky peanut butter
1 tsp. vanilla extract
1 c. chocolate chips

Combine sugar, butter, and evaporated milk in a saucepan. Bring to a boil - boil for 5 minutes while stirring. Remove from heat. Add marshmallows, peanut butter and vanilla and mix thoroughly. Next, fold in chocolate pieces. When chocolate begins to melt, pour into ungreased 8 1/2 x 13 inch pan. Cool in refrigerator for several hours or overnight.