Pour out onto sheet pan. Spread evenly with spatula or spoon
Tap sheet on counter a few times to lift and release any air bubbles
Bake approximately 20 minutes or until toothpick stuck in center comes out clean
Frosting
In large bowl, mix cream cheese, vanilla, and butter
Mix in powdered sugar ¼ cup at a time until you reach the consistency you want your frosting
Frost cake while it is still hot
Notes
*This recipe actually called for oleo. I love seeing that in these vintage, recipe books.If you're unsure what oleo is, I wrote a brief post, What is Oleo?, about it and its different names.