Heat oven to 350°F.

In medium bowl, combine flour, baking soda, cinnamon and salt; mix well.

In large bowl, beat butter and sugars with electric mixer until creamy.

Add eggs and vanilla; beat well.

Add flour mixture; mix well.

Stir in oats and, if desired, raisins; mix well.

Drop dough by rounded tablespoonfuls onto ungreased cookie sheets.

Bake 10 to 12 minutes or until light golden brown.

Cool 1 minute on cookie sheets; remove to wire rack.

Makes about 4 dozen.

Cool completely.

Melt chocolate chips according to package directions.

Dip half of one cookie in chocolate; gently shake to remove excess.

Sprinkle with chopped nuts.

Place on waxed paper until set.

Repeat with remaining cookies.

If chocolate thickens, microwave at 15-second intervals until fluid.

Store cookies with waxed paper between layers in tightly covered container.