This recipe is in http://www.doe-mbi.ucla.edu/people/cascio/RECIPES/quesadilla_salvador.html.
Mix butter and sugar until creamy. Add eggs one at the time. Sift flour and Baking powder. Add to sugar mixture little by little. Add sour cream, parmersan cheese mixing well. Grease spring pan or baking dish with butter. Add mixture evenly. Decorate with sesame seeds. Bake in a preheated oven at 350 degrees for 40 to 60 minutes.
This recipe is guaranteed to clog your arteries. You must have a cholesterol level below 150 to eat this cake.