Melt 1/2 Cup butter and 6 oz chocolate chips over low heat until just melted.
Turn off heat and add one egg slightly beaten.
Add 1 cup powdered sugar and 1/2 Cup chopped walnuts. Stir until chocolate is shiny. Add package of colored miniature marshmallows. Stir until all marshmallows are covered with chocolate.
Roll out foil and sprinkle about 1/4 of bag of coconut on foil. Take half of the chocolate marshmallow mixture and shape into a roll. Sprinkle 1/4 the bag of coconut on top of roll. Repeat with the other half of marshmallow mixture.
Firmly roll each roll up and place in refrigerator for at least four hours before serving. Slice into 1/2 slices.
Each batch makes (2) 12 inch by 3 in wide rolls.
You should get about 24 cookies per roll. (minus the ends) These will keep for weeks wrapped in foil in the fridge.