Spray a 9x13-inch baking dish with nonstick spray.
Place 36 Lemon Oreo cookies in a food processor (or smash in a sealed bag) to make fine crumbs. Reserve 3/4 cup to garnish top.
In a small bowl mix remaining crumbs with 1/3 cup unsalted butter, melted until evenly moistened. Press crumbs in the bottom of the baking dish, and let the crust set up in the freezer while you work on the next layer.
Lemon Filling
In a medium bowl, mix together 2 (3.5 ounce) boxes instant lemon pudding mix and 3 1/4 cups cold whole milk. Whisk well to combine. Cover bowl and place in the refrigerator to chill while you work on the next layer.
Lemon Cream Layer
Place 16 ounces (2 blocks) cream cheese, softened to room temperature in a mixing bowl and blend with an electric mixer until smooth. Blend in 1 cup powdered sugar, 1/3 cup fresh squeezed lemon juice and zest of 1 lemon until smooth.
Fold in 1 tub thawed Cool Whip. Spread mixture gently and evenly over the Oreo crust.
Assemble
Spread the chilled lemon pudding filling evenly over the cream cheese layer.
Spread the remaining tub of Cool Whip over the lemon pudding layer.
Sprinkle remaining crushed Oreos over the Cool Whip.
Allow dessert to set up in the refrieraror for at least 3 hours. Speed the chilling process by putting it in the freezer for the first hour.
Keep refrigerated until ready to serve. Slice and enjoy!
Notes
Please refer to my FAQ’s (Frequently Asked Questions) and ingredient list above for other substitutions or for the answers to the most common questions.
This dessert makes 12-16 servings depending on how big you slice your pieces.
One (18.71 ounce) family size pack has 36 cookies.