Start by placing your whole Oreo cookies into a food processor. (If you don't have one, a blender works beautifully, or use the classic Ziploc bag and rolling pin method if you want the kids fully involved in the sensory experience.) Pulse until you have fine crumbs—aim for the texture of wet sand, not powder. This usually takes about 30-40 seconds in a food processor. Pour your melted butter into a separate bowl and stir in the Oreo crumbs until every piece is moistened. The mixture should resemble damp chocolate soil. If it feels too dry, add a touch more melted butter, one tablespoon at a time. Safety note: Keep kids away from the food processor blade, and if using the Ziploc method, supervise closely to prevent seal ruptures. Once the mixture is ready, let kids help press it firmly into your pie pan, working from the center outward and up the sides. Freeze for 10 minutes while you move to the next layer.

While the crust sets, place your softened butter into a large mixing bowl (or the bowl of a stand mixer if you have one). Make sure this butter is genuinely soft—it should leave an indent when you press it with your finger but shouldn't be greasy. Add your peanut butter and powdered sugar to the same bowl. Beat on low speed for about 2-3 minutes, using a hand mixer or stand mixer. You're aiming for a completely smooth, creamy consistency with no visible streaks of butter. The mixture should look like fluffy peanut butter frosting. Pro tip: If your mixture seems a bit stiff, add one tablespoon of heavy cream and beat again. This creates an even silkier texture that spreads beautifully. Remove your frozen crust from the freezer and spread this peanut butter mixture into an even layer, smoothing the top with a spatula. Place the pie back in the freezer while you create the ganache.

Measure your chocolate chips and peanut butter into a large heat-proof bowl (glass works beautifully so you can see what's happening). This is a perfect task for older kids—they can handle the dry measuring and pouring. In a small saucepan, pour your heavy whipping cream over medium-high heat. You're looking for it to reach a gentle rolling simmer—it should show active bubbles around the edges and small wisps of steam, but it shouldn't be a furious boil. This usually takes about 3-4 minutes. Keep kids at a safe distance from the stovetop, and supervise this step closely.

Once your cream is gently simmering, carefully pour it over the chocolate chips and peanut butter in your heat-proof bowl. Let it sit undisturbed for exactly 5 minutes. This rest period allows the heat of the cream to melt the chocolate gently, creating a smooth emulsion rather than a grainy mess. After 5 minutes, begin whisking slowly and deliberately until everything is completely smooth and glossy. You'll feel the chocolate soften and incorporate into the cream. If you see any small flecks of unmelted chocolate, keep whisking gently; they'll eventually give way. If you added that pinch of sea salt, whisk it in now. It creates a beautiful complexity that makes people ask "What is that flavor?" without being able to identify it.

Remove your pie from the freezer and carefully pour the warm chocolate ganache over the peanut butter layer. Smooth it gently with a spatula, working from the center outward. Don't worry about it being absolutely perfect—that rustic elegance is part of the charm. Return the pie to the refrigerator (no need for the freezer at this point) and let it chill, loosely covered with plastic wrap, for at least 1 hour. Ideally, allow 2-3 hours or even overnight for the flavors to meld and the texture to set into that perfect firm-but-creamy consistency.