So, all that to say, these are really really really yummy!!! You must give them a try!!! I found the recipe on the blog Frugal Antics of a Harried Homemaker. And here it is verbatim:
1 cup butter or shortening (shortening gives a better texture) *I used butter*
1½ cups sugar
¼ cup sour cream
2 cups flour
1 tsp cream of tartar
1 tsp baking powder
½ teaspoon salt
⅓ cup sugar
1 Tbsp cinnamon
Preheat oven to 350F
Cream shortening and sugar. Add eggs, one at a time, scraping down the bowl between eggs. Mix in sour cream.
Combine flour, baking soda, cream of tartar, baking powder and salt. Mix into shortening/sugar mixture.
In a separate, small bowl, combine ⅓ cup sugar and cinnamon.
Sprinkle half the cinnamon sugar mix into a 9X13 pan.
Spread batter on top.
Top with remaining sugar mixture.
Bake 350 degrees for 25-30 minutes. *I baked mine for 26 minutes.
Let cool completely before cutting.