To prepare a bills cheesecake with sour cream cake recipe, you will first need to prepare the following ingredients. Preheat the oven to 350 degrees F (180 degrees C) and grease and flour two 9-inch springform pans. In the bowl of an electric mixer fitted with the paddle attachment, cream the butter and sugar until light and fluffy. Add the eggs and vanilla and beat until combined. Gradually add the flour mixture, beating after each addition until the batter is smooth and no streaks remain. Pour in the milk and mix until smooth. Spoon the mixture into the prepared pan and bake for 35 to 40 minutes or until toothpick inserted in center comes out clean. Let the cake cool for 10 minutes before removing from the pan.