A possible precursor to the snickerdoodle cookie! Adapted and updated from Avis Selby Pfefferkorn's recipe in Let’s Dish: 50th Anniversary Edition, Then & Now Recipe Collection, Complied by the Howard County Historical Society 2014
Preheat oven to 350°. Butter and flour a 9x13 inch metal baking pan. Set aside.
In a large bowl or bowl of a stand mixer, whisk together the flour and sugar. Add the remaining ingredients and beat by hand or with the paddle attachment of your mixer until a smooth, soft batter forms.
Scrape it out into your prepared pan. Smooth the batter to completely cover the bottom of the pan in a uniform layer with the back of your spoon.
Bake 25-30 minutes and cool in pan on a wire rack for 5 minutes. Invert onto a wire rack and flip using another rack or platter so the cake is right side up.
Allow to cool completely.
In a small bowl, whisk together the topping ingredients. Use a wire sieve or dusting wand to coat the cake in the mixture. Cut into small squares.
Notes
Saigon cinnamon is a variety of cassia cinnamon that has a distinct and strong cinnamon flavor. Any variety of cinnamon can be used instead with great results.