In a large bowl, combine rolled oats, coconut & cocoa powder. Set aside.
In a saucepan, combine sugar, margarine and milk. Bring to a boil over medium heat. Let boil for 2 minutes (no longer). Remove from heat and stir in vanilla.
Pour oat mixture into the hot margarine mixture and stir until well mixed. Drop by spoonfuls onto a pan and let cool completely.
(Nutrition information provided is an estimate and will vary based on cooking methods and brands of ingredients used.)