Hi Lori;
Here's the recipe you are looking for.
SESAME TOFFEE BAARS
Break graham crackers into 1/4s along the the perforated lines. Line a large jelly roll pan with the grahams.
Melt together 1/2 cup brown sugar and two sticks of margarine. Bring to a boil and boil for 3 minutes.
Pour mixture over grahams, sprinkle top with 1/4 cup of sesame seeds and 1/2 cup finely chopped pecans. I have made them with just the pecans, just the sesame seeds and with both. I prefer just the pecans.
Bake at 350 for 10 minutes. Remove with spatula immediately and let cool on cake racks. If they set too hard before you get them all off the pan, just return to the warm oven for a few seconds.