Someone has told me that they have a recipe that sounds like this. I’ll post it when she sends.
Here’s one I found, the pics look delicious :)
https://www.theseasonedmom.com/icebox-cake/
Old-Fashioned Icebox Cake
Prep Time 15 minutes
Cook Time 0 minutes
Chilling Time 4 hours
Total Time 4 hours 15 minutes
Servings 16 slices
Ingredients
3 ½ cups very cold heavy whipping cream
½ cup powdered sugar
1 teaspoon vanilla extract
¼ teaspoon salt
40 chocolate graham crackers (or more or less, depending on the shape of your dish)
Optional garnish: sprinkles, grated chocolate, crushed chocolate grahams
Instructions
In a large bowl, use an electric mixer to beat heavy cream, powdered sugar, vanilla and salt until stiff peaks form.
Spread a very thin layer of the whipped cream in the bottom of a 9 x 13-inch dish.
Place a layer of the graham crackers or chocolate wafers in the bottom of the dish, breaking them as necessary in order to fit.
Gently spread ¼ of the whipped cream on top of the crackers. Top with a second layer of crackers and then another layer of whipped cream.
Repeat the layers until you have used a fourth layer of crackers and the final ¼ of the cream.
Garnish the cake with crushed chocolate grahams, sprinkles, or grated chocolate.
Cover loosely and refrigerate for at least 4 hours, or up to overnight.
Notes
How to store Icebox Cake: Icebox Cake needs to be refrigerated. Covered loosely, it will last in the refrigerator for 3-4 days (but it’s best within the first two days).
The cream needs to be very cold when you whip it, so keep it refrigerated up until the last minute. I also like to chill my mixing bowl in the refrigerator for at least 15-30 minutes before using it to whip the cream.
Icebox Cake with Cool Whip: I stuck with the old-fashioned version and used homemade whipped cream here, since it only requires a few extra minutes of prep. That said, you can also make the cake using thawed Cool Whip. You’ll need about 7 total cups of Cool Whip.
Use either chocolate graham crackers or chocolate wafers for a classic taste, or mix up the cookies for different flavor combinations. You can use regular graham crackers, Oreo cookies, sugar cookies or gingersnaps.
Add fruit to the layers in your icebox cake. You can use sliced bananas, sliced strawberries, or spread thin layers of lemon curd throughout.