In a large bowl, mix the sour cream, whipping cream, eggs and vanilla extract.
Slowly add the dry ingredients into the wet ingredients, mixing thoroughly.
Using a donut pan (or using a muffin tin with scrunched up baking paper in the middle), slowly pour enough of the batter to ¾ fill the mould, and place in the oven for 10-15 mins or until firm to touch on the outside.
Remove the donuts and let cool.
Fill a frying pan with the coconut oil, heat up the pan and fry each donut for approximately 2 mins each side or until golden brown.
Place the Natvia and cinnamon together on a plate, and roll the donuts in the mixture.
Serve and enjoy!
** Nutrition per serving: Calories 141, Fat 12g, Protein 4g, Carbs 2g