Cheese Fudge

1 cup butter

8 oz Velveeta cheese

1 ½ tsp vanilla

2 lbs powdered sugar

½ cup cocoa

Melt butter and cheese over low heat.  Take off heat and stir in vanilla, powdered sugar, and cocoa that has been blended.  Mix quickly and spread in buttered 9x13 pan.  Let stand for 2 hours before serving.