Hi Jackson,
I don't know if this is the exact recipe you are looking for, but it was in one of my cookbooks and was called by the same name of the dessert that you were looking for.
Blueberry Yum-Yum
1 large and 1 small pkg. of cream cheese
1 cup sugar
1/2 cup milk
2 large or 4 small envelopes Dream Whip Topping
1 can blueberry pie filling

Mix graham cracker crumbs and melted butter to form a crust for oblong baking dish. Keep enough to sprinkle over the top. Mix above ingredients together and layer over crust. Add blueberry pie filling, top with remaining filling. Sprinkle with graham cracker crumbs. Chill. You may add pecans if you wish.