Watch this video to see how to make a no-bake, refrigerator pie. A creamy peanut butter mousse-like filling is spooned into a graham cracker crust and topped with whipped cream and chocolate peanut butter cups. Let this pie chill out in the fridge or freezer overnight and be dazzled by your nutty creation! Get the top-rated recipe for Peanut Butter Pie. And while this pie is ready to go, you might want a drizzle of chocolate sauce to step it up one more notch.