Ingredients
1/2 cup butter, softened2/3 cup plus 1 tablespoon sugar, divided1 egg1/2 teaspoon vanilla extract1 cup all-purpose flour1/2 teaspoon baking soda1/2 cup sour cream1/2 teaspoon ground cinnamon
Preparation
In a bowl, cream butter and 2/3 cup sugar until light and fluffy, about 5 minutes. Beat in egg and vanilla. Combine flour and baking soda; add to creamed mixture alternately with sour cream. Beat just until combined.
Combine the cinnamon and remaining sugar; sprinkle 1-1/2 teaspoons into an 8-in. fluted tube pan coated with cooking spray. Add half of the batter. Sprinkle with remaining cinnamon-sugar; top with remaining batter.
Bake at 350° for 30-35 minutes or until toothpick inserted in the center comes out clean. Cool for 10 minutes before removing from pan to a wire rack to cool completely.