1) Preheat oven to 350
2) Melt the margaine in the microwave
3) With an electric mixer, cream together the brown sugar, sugar, eggs, peanut butter and melted margarine until creamy.
4) Add the flour, soda, salt, quick oats and vanilla and mix well
5) Grease a large cookie sheet and spread the dough out evenly
6) Bake for 15-17 minutes or until edges look golden brown.
7) Right as the peanut butter bars come out of the oven, sprinkle the chocolate chips evenly across the top Wait for them to melt and then spread them out overing the peanut butter bars evenly
8) After the bars are completely cooled and the chocolate is dry to the touch, frost evenly with the peanut butter frosting