Reese's Butterfinger Cream Cheese Trifle

box Pillsbury chocolate cake mix (15.25 ounces, plus ingredients shown on the back of the box to prepare the cake)

package Oreo cookies (15.5 ounces, quartered)

fun-size Butterfinger candy bars (chopped)

bag miniature Reese's peanut butter cups (12 ounces, chopped)

cream cheese (softened)

butter (1 stick, softened)

peanut butter

powdered sugar

whipped topping (divided)