Before I touch a single ingredient, I pop a metal mixing bowl into the freezer. This little step makes a big difference because a cold bowl helps heavy cream whip up faster and hold its shape longer. It only takes fifteen minutes, and I use that time to prep everything else.

I toss 28 whole Oreos into my food processor and pulse until they turn into a coarse crumb. Then I drizzle in the melted butter while it's still running, until the mixture looks like wet sand. I press this firmly into my baking pan using the bottom of a measuring cup, then chill it in the fridge while I work on the filling.

In a large bowl, I beat the softened cream cheese with the powdered sugar for a couple of minutes until it's smooth, pale, and fluffy. This step matters because lumpy cream cheese will show up in every bite, so I make sure it's fully softened before I start.

Using my chilled bowl, I add the heavy cream, vanilla, and remaining powdered sugar, then beat it on medium-high until firm peaks form. I watch it closely here, since overbeaten cream turns grainy and can even start separating into butter.

I gently fold the whipped cream into the cream cheese mixture using a spatula, working in broad strokes so I don't knock out all that air. Then I crush about 8 more Oreos and fold those in too, keeping some chunky texture rather than turning them to dust.

I spread the filling evenly over my chilled crust, smoothing the top with my spatula. Then the pan goes into the fridge for at least an hour, uncovered or loosely covered, so the filling can firm up enough to slice cleanly.

Right before serving, I crush the last 8 Oreos and scatter them generously over the top. I've learned that adding them too early makes them go soft, so I always wait until just before the bars hit the table.