Preheat oven to 350 degrees (F). Line muffin tray with paper liners (16). Lightly grease the top of the tray to prevent sticking.
Sift together flour, beetroot powder, cacao, ginger, vanilla bean powder, baking powder, baking soda and salt. Set aside.
In a separate bowl, cream together sugar and melted butter and coconut oil. Add buttermilk, vinegar and eggs; whisking well to combine.
In two additions, fold the wet ingredients into the dry, mixing thoroughly, but taking care to not over work the batter.
Spoon into lined muffin tin, filling about 2/3 of the way up the tin. Bake for approximately 18 minutes, or until a skewer inserted into the mid of a cupcake reveals a moist crumb. This beetroot red velvet cupcake recipe can be easily adapted to a layer cake by using two 9" cake pans. Although I have not experimented with the change myself, I would just bake until a skewer inserted in the middle of the cake reveals a moist crumb.
Remove from oven and cool completely before frosting.