Preheat your oven to 175c and line two loose bottom cake tins with baking paper. ( I tend to line the bottom, then grease the sides with vegan butter) I have used 16cm tins here)
Combine the vinegar, milk and oil and set aside.
In a large mixing bowl, add all of your dry ingredients and mix well. Pour in the wet mixture and fold until everything is fully incorrporated.
Divide your cae batter evenly between your tins and place into the oven to bake for around 30 minutes, or until cooked through.
Allow to cool competely whilst preparing the icing.
Using an electric mixer, beat the butter until light and fluffy. Gradually add in the powdered sugar whislt mixing, then the food colouring/powder until you reach your desired shade of pink.
Sandwich the cakes together using your frosting, then use the remaing mixture to cover the cake! Decorate with toppings of choice and enjoy!