Preheat the oven to 350° to bake your graham cracker base.
Lightly oil a 13" x 9" x 2" pan.
To make the base:
I was taught in high school, the way to make crumbs was to put the graham crackers in a big baggie, seal and then roll with a rolling pin. Works great and I still do it but you can use the food processor if you prefer.
Mix the graham cracker crumbs, ¼ cup sugar and melted butter together.
Press evenly into your prepared pan.
Bake at 350° for 8 minutes.
While this is baking make the topping because you want to add the top as soon as you take the base out of the oven.
To make the topping:
In a saucepan melt the butter and add the brown sugar.
Bring to a slow boil and boil 1 minute. Stirring.
Add the nuts and boil another minute.
Spread the sugar and nut mixture over the hot baked base.
Bake 15 more minutes.
Remove from the oven and sprinkle the chocolate chips over the top. The chips will melt a bit, automatically, into the base.
Let stand for 5 minutes.
Cut into bars and let cool about 10 more minutes before removing from the bar.
Cool completely on wire rack.
Video
Notes
TO FREEZE:After they have cooled you may freeze them in any of the methods shown in my article Preparing Food for the Freezer They defrost quickly so it really doesn't take any planning. Just put them on a plate for an hour or two and enjoy.