I Made My Own Costco Peanut Butter Chocolate Pie and I Have to Say, It’s Better Than the Original

A quick glance at any of the Costco fan pages makes it clear that members were anxiously awaiting the arrival of the pie to their local warehouses (or for pies to be in stock for longer than a second). Kitchn’s grocery editor, Mara Weinraub, was the first among us to get her hands on the decadent dessert, even suffering a sore arm from clutching the pie while she stood in a long checkout line. 

If you aren’t a Costco member or still can’t find this massive pie in stock, we’ve got the next best thing — a homemade version that might just be even better than the original. 

The pie starts with a lightly sweetened graham cracker crumb crust that’s simple to make and requires no baking. The peanut butter layer plays a dual role in this pie: as a no-bake peanut butter filling made with cream cheese, creamy peanut butter, and heavy cream (which lightens the mixture slightly so that the filling is more mousse-like), and as a garnish in the form of peanut butter swirls. The final layer is made with chocolate and mini marshmallows, an unexpected ingredient that provides just enough gelatin to help it set while allowing the chocolate flavors to come through. 

While freezing may be a bigger concern for Costco’s 12-inch, 4 1/2-pound pie, you may still want to preserve a portion of this copycat pie for later. The good news is yes, you can freeze the pie for up to one month. Place the pie, uncovered, on a baking sheet and freeze until solid, then wrap in aluminum foil. To thaw, unwrap the pie and place in the refrigerator overnight.