Preheat oven to 325 degrees. Grease and flour a 10
inch tube pan. In large bowl, cream butter and
cream cheese until smooth. Add sugar gradually and
beat until fluffy. Add eggs two at a time, beating
well with each addition. Add the flour all at once
and mix in. Add vanilla. Pour into a 10 inch tube
pan. Bake at 325 degrees for 1 hour and 20
minutes. Check for doneness at 1 hour.