Macmillan Cancer Support: Guess the Name of the Cake Quiz

[denquiz]

Just stuck on this last answer. Any CLUES much appreciated, please! No number of letters given.

Too big to get sucked into until you hit the biscuit.

Many thanks in anticipation of your help!!

[nannakath]

Cheesecake perhaps.

[denquiz]

Thanks nannakath, I thought it might be something like that. I did think of Mississippi Mud Pie as well as it has a biscuit bottom layer but I wasn't sure!