Stuffed as I was after eating 5 kinds of desserts that day, I was still able to squeeze it in.
It was released by Burger King US for The Simpson's movie. It is a pie similar to their Hershey's Sundae Pie but topped with butterfinger pieces - wikipedia
Burger King's Butterfinger Creme Pie P75, is made up of three layers. Cornflakes crust, cream cheese mixture and the butterfinger pieces on top.
At first you'll like the taste but somewhere in between you'll feel nauseous because of too much cream and too thin crust.
There's too little of the crust to break the richness of the cream and the sweetness of the butterfinger pieces. It is also quite expensive for its size.