This is from my cousin Kathy Gabris Lang, who is the hostess with the mostest. She served this (among many other wonderful things) during our recent visit to the homeland, St. Louis. Every last one of the cousins, aunts, uncles, etc were so welcoming and fed us to the gills with German and St. Louis specialties.
1 pkg yellow cake mix
1 stick butter
8 oz cream cheese
1 tsp vanilla
1 lb box powdered sugar
Mix first 3 ingredients and pat into slightly greased 13 x 9 pan
Mix and beat next 4 ingredients. Kathy likes to beat these thoroughly, a couple of minutes to achieve a crisp top layer.
Pour over cake mix layer.
Bake at 325 for 45 minutes. Sprinkle with powdered sugar as soon as you take it out of the oven.
Optional: sprinkle nuts or spoon cherries, or pie filling, or blueberries on top before baking.