Preheat the oven to 170ยบ.
On a big blender or kitchen robot place the beetroot, the eggs, the vinegar and the olive oil and blend until yo get an homogeneous mixture.
On a large bowl add the flour, the brown sugar and the baking soda and mix well.
Combine the wet mixture into the flour bowl.
Grease some muffin tins and fill them until 2/3 full.
Bake for 25min or until cooked.
Place the yogurt in a cheese cloth (or a kitchen cloth) and squeeze to drain all the water. However, better results are achieved if this step is done 12/24 hours in advance.
Add the yogurt on a bowl and combine it with the vanila extract. Mix well and use it as the frosting for the muffins
Let the muffins cool completely before adding the frosting.
Decorate with edible flowers.