1 box cake mix (white or yellow)
1/2 c. melted butter (1 stick)
1 beaten egg
2 (8 oz.) pkg. softened cream cheese, beaten
4 beaten eggs
5 1/2 c. sifted powdered sugar
2 tsp. vanilla

Mix first 3 ingredients together and press into a heavily greased 9 x 13 cake pan. Press up along sides at least 1 inch.

Beat rest of ingredients until smooth and pour over above mixture. Sift cinnamon lightly over top. Bake 25-35 minutes in a 325 degree oven. Be very watchful after the first 25 minutes (crust is easily scorched after this length of time). When cake is medium brown, remove from oven and allow to settle, but while still warm, sprinkle with powdered sugar to taste.