01 - 
                Preheat the oven to 325°F (165°C). Grease and flour a 10-inch tube pan.
              
              
              
                02 - 
                In a mixing bowl, cream the butter and cream cheese together until smooth. Gradually add sugar and beat until fluffy.
              
              
              
                03 - 
                Add the eggs, two at a time, beating well after each addition.
              
              
              
                04 - 
                Add the flour all at once and mix until just combined. Stir in the vanilla extract.
              
              
              
                05 - 
                Pour the batter into the prepared pan. Bake for 1 hour and 20 minutes, checking for doneness at the 1-hour mark. A toothpick inserted into the center should come out clean.
              
              
              
                06 - 
                Remove the cake from the oven and let it cool in the pan. Once cooled, transfer to a serving plate. Dust with powdered sugar if desired.