Strawberry Heaven on Earth Cake

 Lightly spray a 9×9 glass baking dish with cooking spray.
 Layer half of the cubed angel food cake in the dish.
 Spread ⅔ of the strawberry pie filling over the cake.
 Add the remaining cake cubes on top.
 Whisk together cold milk and sour cream until smooth.
 Whisk in the pudding mix until thickened.
 Spread the pudding mixture over the cake cubes.
 Evenly spread the whipped topping over the pudding.
 Spoon the remaining pie filling in dollops, swirling with a knife.
 Cover and chill for at least 8 hours before serving.

Notes :
 Best served chilled.
 Store in the refrigerator for up to 4 days.