Preheat oven to 375 degrees. Grease cookie sheets or line with parchment paper.
Sift together flour, baking powder, baking soda, salt, cinnamon, nutmeg, and sugar. Add butter, eggs, and half the bananas; beat until creamy. Fold in remaining bananas and oats.
Drop by teaspoons onto cookie sheets. Bake about 15 minutes.
Makes 4 dozenRecipe submitted by Joyce on 11/7/00