Makes 25 squares
Preheat oven to 350°F.
Cream together the margarine and brown sugar with electric beaters. Add the vanilla.
Gradually sift in the flour and stir until incorporated.
Press dough into an 8�8-inch* nonstick (or lined with parchment) baking pan and bake for about 15 minutes until firm and golden. Don�t take them out too early or they won�t get crispy and toffee-like.
Remove from oven and uniformly sprinkle the chocolate chips in the pan. Return to the oven for about 30 seconds so the chocolate is melty and spreadable. Using a knife, spread the chocolate evenly over the cookie layer. Sprinkle with the nuts, then let cool (the fridge or freezer helps with this if you�re in a hurry) so the chocolate firms up. Cut into 25 squares and transfer to a cooling rack. Enjoy!
*This recipe can be halved and baked in a 8�4-inch loaf pan.