I found this recipe in my mother-in-laws collection. Jeanette was one of her friends from the Senior Center where she did swimming and ceramics. They often had potlucks where they shared recipes.
1 1/2 c sugar
1 1/4 c butter or marg
1 tsp baking powder
1/2 tsp baking soda
1 tsp nutmeg
1 cup sour cream or buttermilk
1 tsp vanilla
2 eggs
pinch of salt
3 cups flour
Cream sugar, butter, baking powder, baking soda, nutmeg, vanilla & salt. Add eggs, mix until smooth. Add sour cream & sifted flour-batter will be stiff. Fill gr. muffin cups. Sprinkle with cinnamon and sugar. Bake 375 oven 20 min.