Beat the butter on medium speed until fluffy. Add the cream cheese and beat until the two are uniformly combined. Next, gradually pour the sugar into the butter.
Scrape the bowl down and add the vanilla extract followed by one egg at a time. Finally, add the flour one cup at a time, scraping the bowl down as needed. (See post for more detailed instructions.)
Pour the batter into a prepared bundt pan and bake for 1 hour and 15 minutes. Rest the cake for 15 minutes before removing it from the pan and cooling on a wire rack.