Preheat the oven to 170°C and line one cupcake pan with 12 cupcake cases.
Sift the flour and salt together, add this with the suagr to a bowl of an eletric mixer fitted with a whisk attachment. Whisk to combine.
In a jug, combine the oil, vanilla, and milk alternative. With the motor running add the wet ingredients to the dry ingredients and mix until just combined.
Add the vingear and mix again briefly.
Fill the cupcake cases with the mixture until ¾ full and bake in a preheated oven for about 12 minutes or until cooked. Allow the cupcakes to cool before icing.
To make the icing, place the vegan butter and the icing sugar in a bowl of an electric mixer fitted with a paddle attachmnet. Beat on medium speed until combined. Mix on high speed until light and fluffy.
Fold through the crushed Oreos with a spatula. Fill the piping bag fitted with a piping nozzle with the icing and swirl the cooled cupcakes. Top with more crushed Oreos, enjoy!