| 1 1/2 cups butter, softened 1 1/2 cups white sugar 2 eggs 1 cup buttermilk 1 teaspoon baking soda 2 cups all-purpose flour 1/2 teaspoon salt | 1/2 cup butter flavored shortening 1 (8 ounce) package cream cheese 4 cups sifted confectioners sugar 1 tablespoon milk |