looking for a dessert my family called "N. Dakota dessert"

I am hoping the power of the peas can help. My dad is coming for Thanksgiving and my mom always would make what we called "North Dakota Dessert". She is in memory care now and the recipe is not accessible to her anymore. I have no doubt it was not really called what we called it but she got it from her sister, who lived in North Dakota. It was three layers in a crust. I personally don't remember if it was a graham cracker crust or pie crust, my sister thinks it was a pie crust but isn't sure. The bottom layer was a white cream cheese-based layer. (I only know that because the last time my mom made it, she used moldy cream cheese in hopes of poisoning my dad.) The second layer was chocolate pudding based. Maybe it was just straight chocolate pudding? And the third layer was some kind of whipped topping...maybe Cool Whip with something else? I am not sure. It was something that was kept chilled and she would cut it into squares. Does this sound familiar to anyone??

ETA: The original recipe could easily have had nuts but my dad hates all nuts other than peanuts so she would have left that off.