To make Oreo cupcakes with fondant frosting, you need eggs, sugar, butter, leavening, vanilla extract, milk, Oreo cookies, and fondant. You scramble the milk and vanilla extract in one bowl. In another bowl, you sift flour with leavening. You beat the butter and sugar until creamy, then add eggs and beat together. Grind the Oreo cookies and add all ingredients to a bowl beating well. Pour the batter into moulds and bake at 180 degrees for 30 minutes. For decorations, roll out blue and pink fondant to make circles and bows, placing them on the cupcakes.