Preheat oven to 300~. Mix all ingredients, except chocolate chips and peanut butter, to a crumble. Pat into a 11x13" lightly greased pan. Bake no more than 12 minutes. Will be soft and runny when taken out of oven, but will set when cooling. Topping-Melt chocolate chips and peanut butter together and then spread evenly on top. Chill until chocolate is set.