The pound cake element in this sundae is the classic cream cheese Bundt we've had on Bon Appétit for over 20 years, halved to fit in a standard loaf pan.
The Ice Cream Sundae Dessert You Should Be Making Weekly This Summer - Tasting Table
To build the dessert, you'll start by thawing ice cream so it's soft enough to spread over the bottom of a casserole dish or pie tin with the help of a silicone spatula.