Combine the Flour, Cocoa, Sugar, Baking Soda and Powder and Salt in a medium mixing bowl
Beat together the Egg, Milk, Oil, Vinegar and Vanilla Extract until well mixed
Add the Egg mixture to the dry ingredients and stir well – gently fold in the 4 crushed Oreo Cookies
Heat up your 4 sandwich, Sandwich Maker and divide the batter between the 8 triangles – close and cook until the Machine shows green – always test with a toothpick before removal (if not quite done leave to cook another minute or two)
Remove from the Sandwich Maker and let cool completely on a cooling rack
TOPPING:
Place the Icing Sugar, Butter, Fresh Cream and Vanilla in a medium mixing bowl – beat until smooth, scraping the sides regularly
Spread the Topping over the cooled Triangles and sprinkle with the remaining 2 crushed Oreo Cookies