Combine all dry ingredients in a bowl and set aside.
Combine room temperature butter, cream cheese and sour cream in a bowl.
Add eggs, vanilla extract, liquid stevia and combine well.
Gently fold dry ingredients into wet ingredients. Make sure not to over mix! Lumps are okay.
Pour mixture into a loaf pan and bake at 325 for 30 minutes.
Allow to cool and then cut in half length wise. Cut two halves into 4 equal pieces and then 4 more equal pieces to resemble 8 mini cakes as seen above! Enjoy!