Thirty Minute Yellow Cake

Preheat oven to 350 degrees F (175 degrees C). Grease and flour a 9x13 inch pan, or two 9 inch round pans.
Cream together the shortening and sugar. Beat in the eggs. Add the flour, milk, and vanilla, and beat to a soft smooth batter.
Bake 20 to 30 minutes in the preheated oven, or until tester inserted in the center of the cake comes out clean.