Quick Cinnamon Rolls
1 cup confectioners' sugar 1 egg 1 tablespoon ground cinnamon 1 teaspoon salt 2 cups all-purpose flour 2 tablespoons white sugar 2 teaspoons baking powder 3 tablespoons butter, softened 4 ounces cream cheese, softened ¼ cup butter, divided ¼ cup butter, softened ½ cup brown sugar ½ cup white sugar ½ teaspoon vanilla extract ¾ cup milk