Beat in the eggs and vanilla. Beat in the oat mixture. Stir in the flour until just mixed. Fold in the dates and nuts. Drop dough by rounded teaspoonfuls about 2-inches apart onto a greased cookie sheet.
Transfer cookies to a wire rack to cool completely.
Drizzle in a decorative manner with the Powdered Sugar Icing, if desired. Makes about 5 dozen cookies. In a small bowl combine powdered sugar and vanilla extract. Stir in enough milk to make an icing of drizzling consistency. All rights reserved.