In a bowl mix 11/2 cups sugar, 4 eggs and 2 tsp vanilla sugar.
Place the margarin, cocoa and chocolate chips in a double boiler and melt. Add it to the sugar and eggs in the bowl.
Add flour, baking powder and salt.
In a seperate bowl, add 2 eggs, cream cheese, 1/2 cup sugar and 1/2 tsp vanilla sugar.
In a large muffin or cupcake holders, place 2 tablespoons chocolate mixture. 1 Tablespoon of cheese mixture and top off with a 1 teaspoon of chocoate. When it will bake it will look marbelized.