Well, let me tell you, it IS good! I made two of these pies for Sunday's potluck at church. The recipe stated that the pie was best served the day it was made, but I couldn't do that, as I needed to make them the day before. The only thing I did on Sunday morning was to make some lemon-flavored whipped cream to put on top.
I made one of the pies with a homemade graham cracker crust (baked) and the other with a gluten-free baked pie shell, also homemade. I only tasted the gluten-free one, but the other pie must have been fine too, because not a scrap of either one was left. This is definitely one of the most delicious pies I've ever tasted.
Basically, the filling is similar to a lemon meringue pie filling, only with blueberries and sour cream added. Don't try this with frozen blueberries, as I fear the results would be very disappointing.
The only thing I did differently was to use whole eggs instead of egg yolks -- long ago, my mother taught me that a whole egg could be substituted for 2 egg yolks. This pie calls for 3 yolks, so I probably wouldn't have attempted this substitution except for the fact that I was making two pies. Thus, I would need 6 yolks, so I successfully substituted 3 whole eggs.
This substitution did make the filling a paler yellow, and I probably would have added a drop or two of yellow food coloring if I hadn't been out of that.
If you are making only one pie, go ahead and use the 3 yolks and find another use for the whites.
For the top, you could use cool whip, but I would suggest real whipped cream. I gilded the lily even further by making it a lemon flavored whipped cream. For the 2 pies, I whipped 2 cups of cream, adding in 1/2 cup confectioners sugar gradually after the cream reached soft peaks. I continued beating until the cream was in stiff peaks, adding 2 tablespoons of lemon juice, a tablespoon of vanilla and 1/2 tsp. of pure lemon extract. (If I'd had another lemon, I would have used a couple teaspoons of lemon zest instead of extract.) If you are making only one pie, simply halve all the quantities in these whipped cream directions.) I spread the whipped cream all over the top of each pie.
People were raving over this pie! And my hubby and I were very sorry there was none left over.
I live in scenic northern New England with my handsome husband. We're empty-nesters with a bunch of adorable grandchildren. We love (tent) camping and traveling, but don't get away as often as we'd like to.