1) heat oven to 375 degrees
2) Beat margarine and sugar until creamy. Add egg and vanilla; beat well. Add combined flour, baking soda, cinnamon, salt and nutmeg; mix well. Stir in oats; mix well.
3) Drop dough by rounded tablespoonfuls onto ungreased cookie sheets.
4) Bake 8 to 9 minutes for a chewy cookie or 10 to 11 mintues for a crisp cookie. Cool 1 minute on cookie sheets; remove to wire rack.. Cool completely. Store tightly covered.