Instructions

1. Beat butter and cream cheese for 2 minutes, until mixture is creamy. Gradually add sugar, beating 5-7 minutes until very light and fluffy. Add eggs, one at a time, beating just until yellow disappears. Add vanilla, mixing well. Combine flour and salt, gradually add to butter mixture, beating at low speed until blended after each addition. Pour batter into a greased and floured 10 inch tube pan. Fill a 2 cup, ovenproof measuring cup with water and place in oven next to tube pan.
2. Bake at 300 degrees for 1 hour and 30 minutes, or until toothpick inserted into center of cake comes out clean. Cool in pan for 15 minutes; remove from pan and cool completely.