1 1/3 c. ground graham cracker crumbs
3 tbsp. sugar
1/2 c. butter

Mix together and press into a 9x13 pan. Bake 10 minutes at 350 degrees. Sprinkle 1 cup walnuts over crust. Next pour 1 can sweetened condensed milk over crust. Bake 10 minutes more. 1 c. peanut butter

Melt chocolate chips and peanut butter together and spread over top of baked ingredients. Let set for 30 minutes then cut into bars.