Heat oven to 350 degrees.
Line 13x9 inch baking pan with aluminum foil, leaving a 1 inch overhang; set aside.
Combine brown sugar, margarine, and peanut butter in large bowl.
Beat at medium speed, scraping bowl often, until creamy.
Add eggs and vanilla; continue beating until well mixed.
Reduce speed to low.
Mix together flour, baking powder, and baking soda and add to mixture.
Beat until well mixed.
Stir in chocolate chips
Put dough into prepared pan.
Sprinkle with sugar. Bake for 20-22 minutes or until golden brown.
22 Minutes
Immediately press evenly spaced chocolate candies into warm bars.
Cool completely
Remove bars from pan using edges of foil.
Cut into bars, cutting between candies