Mix together jello and boiling water until completely dissolved, about 3 minutes.
Stir in un-drained crushed pineapple, can of blueberry pie filling and mix all ingredients really well.
Pour blueberry jello mixture into a 9 x 13 pan.
Refrigerate jello mixture for a minimum of 2 hours so salad can solidify properly - may need up to 3 hours.
Combine cream cheese, sour cream, sugar and vanilla in a bowl and beat well until smooth, which makes a cream cheese frosting.
Spread cream cheese frosting on top of blueberry layer.
Cover dish and refrigerate for at least 1 hour or until ready to serve.
Cut Blueberry Salad into 24 pieces and serve cold.
Can other pie fillings or jell-o flavors be used? Yes! Now switching pie flavors to cherry, blackberry or any of the awesome canned pie fillings out there may change the flavor, but this is a great way to make the "salad" your own. Just make sure to change up the Jello flavors as well to match the color/tone and flavor.