1. Pre-heat oven to 180ºC.
2. Sift all dry ingredients (not the sugar) together. Add nuts.
3. Cream eggs, butter and sugar together in a separate bowl.
4. Fold the sour cream into the creamed mixture.
5. Gently fold both dry and wet ingredients together.
6. Pour mixture into well greased muffin trays and bake for 25 – 30mins.