Oreo Icebox Cake layers softened cookies, pudding, and whipped cream into a chilled dessert that cuts like cake and tastes like cookies and cream heaven.
Line the pan with parchment, leaving an overhang so the cake lifts out easily. Scoop out 1 heaping cup of whipped topping and set it aside.
In a bowl, add both pudding mixes. While whisking constantly, gradually pour in 2-1/4 cups milk. Continue to whisk for 1-2 minutes or until smooth. Gently fold in the remaining whipped topping until combined.
Pour the last 1 cup milk into a shallow bowl. Dip cookies (both sides) in the milk, then arrange a single layer in the pan, breaking cookies as needed to fit.
Spread half the pudding mixture over the cookies. Add another milk-soaked cookie layer, then the rest of the pudding. Finish with a final cookie layer.
Spread the reserved whipped topping over the cookies. Cover and refrigerate at least 8 hours (overnight is best) so the cookies can fully soften.
Lift out the cake, cut into squares with a sharp knife (wipe the blade between cuts), and garnish with a few leftover crumbled Oreo cookies if desired.
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Notes
Note 1: You’ll need nearly two full party-size Oreo packages. You’ll likely have some left over, but it’s better to have extra than not enough.Note 2: Use two boxes of regular instant pudding mix, not sugar-free, low-fat, or cook-and-serve. Make sure they’re the small 3.4-ounce boxes.Note 3: Regular Cool Whip® gives the best texture. Light or sugar-free versions can turn watery.Cutting Tip: Warm a sharp knife under hot water, dry it off, and slice for clean edges.Storage: Keep the cake covered in the fridge. It’s best within 2 to 3 days. After that, it may start to get watery. Freezing is not recommended.