In a medium bowl, combine flour, baking powder, baking soda, salt, and oats.
In a large bowl with mixer at medium speed, beat margarine and peanut butter until smooth.
Beat in sugars until blended. Beat in eggs and vanilla.
Add flour mixture; by hand, mix until well combined. Shape into 2 inch balls.
Place on ungreased cookie sheet; flatten each to 3-inch diameter.
Bake in 350 degrees F oven 15-17 minutes or until golden. Remove from cookie sheet, cool on wire rack.
Suggested Handi-Foil Products:
22315 - Handi-Foil Cookie Sheets