Make your buttermilk by placing 1/2 tbsp white vinegar in a 1/2 cup measuring cup, and filling the rest with milk. Set aside
Beat butter, egg, sugar, and vanilla together
In a seperate bowl combine dry ingredients- cocoa powder, flour, red velvet color, and baking powder
In a small bowl add an additional 1/2 tbsp vinegar to your buttermilk
Slowly add dry mix and buttermilk to the egg mixture
Combine until smooth
Pour into 8-9 cupcake liners
Bake at 350 for 15 minutes
Allow to cool completely before icing and decorating with natural sprinkles
For frosting whip ingredients together and refrigerate to stiffen up a bit. It's very soft and delicious as is! Feel free to add 1 tbsp arrowroot starch or 1-2 tbsp powdered sugar to make it thicker if need be