1. Preheat oven to 350°F.
2. Grease a 13x9-inch pan.
3. In a large bowl combine brown sugar,peanut butter,corn syrup,margarine and vanilla,blend well.
4. Add remaining ingredients and mix well.
5. Press evenly into greased pan.
6. Bake at 350°F for 15-20 minutes or until light golden brown.
7. Cool 1 hour.
8. Cut into bars.