Set your oven to 450 degrees. Wash and peel the beets. Cut into small pieces and bake in the oven for 40 minutes or until tender.
Next blend the cream cheese and the butter together in the mixer. Then, 1/2 cup at a time add in the sugar. Set aside and clean up your mixer.
Mix the cake flour and the other top 4 ingredients - set aside.
Now, mash up one cup of bananas, or use butter. Cream up the mashed banana, sugar and the vanilla.
Put the hot beets in your blender - I used my Vitamix. Pulse on high until they turn into fine pieces. Next, add in the orange juice and the apple cider vinegar. Blend again. Then, add in the milk - blend again. The puree should be bright red and not too thick. Set aside.
In your mixer, add in one egg at a time to the banana/sugar mixture. Once the eggs are well blended, add in a bit of the beet puree and the dry ingredients. Keep mixing until everything is incorporated.
Pour out into 2 well greased 9 inch pans. Bake at 350 degrees for 30-40 minutes.
Cool the cakes then ice away.