Preheat oven to 350. Grease and flour a 9x13 pan or 2 9inch pans; set aside. Combine sugar, oil, eggs and vanilla at med. speed; beat 1 minute.
Gradually add remaining ingredients, alternating wet and dry, and beat 2-3 minutes .
Pour batter into prepared pan and bake for approx. 40-45 minutes or until cake is done. Cool for 5 minutes and carefully remove from pan.
Using a mixer, combine cream cheese, powdered sugar, salt, peanut butter until smooth. Using a spatula, gently fold in whipped topping until smooth. Chill frosting for about 1 hour. This frosting tastes like a creamy penaut butter mousse. Spread cake with frosting and sprinkle all over with chocolate sandwich cookie crumbs. Garnish with chopped peanut butter cups and warmed fudge frosting or as desired.