1. Make a mixture of margarine. Brown sugar, oats and syrup and transfer into two glass utility dishes evenly.
2. Push to make an even surface and bake each of the mixture for about 3½ minutes till the top turn bubbly and allow to cool.
3. Take a bowl, melt peanut butter and chocolate pieces for 1½ minutes, stirring halfway though.
4. Stir to a smooth mixture, top the oatmeal mixture and chill in the refrigerator.
5. Bring to the room temperature and cut each of the dish into 24 squares.