01 - Arrange half of the angel food cake cubes in an even layer at the bottom of a large trifle dish or 9x13-inch glass baking dish.
02 - Spoon half of the strawberry pie filling evenly over the cake cubes, spreading to cover completely.
03 - Layer the remaining cake cubes on top of the strawberries, creating an even base for the remaining filling.
04 - Spread the remaining strawberry pie filling over the second cake layer, ensuring even distribution.
05 - Whisk together cold milk and vanilla pudding mix in a medium bowl until thickened, about 2 minutes. Fold in sour cream and vanilla extract until smooth and fully incorporated.
06 - Spread the pudding-sour cream mixture evenly over the cake and strawberry layers, using a spatula to create a smooth surface.
07 - Top with whipped topping, spreading it gently to cover the entire surface without disturbing the layers beneath.
08 - Sprinkle sliced almonds and fresh sliced strawberries on top for garnish, if desired.
09 - Cover the dish and refrigerate for at least 2 hours, or overnight, to allow the dessert to set and flavors to meld together.
10 - Slice into squares and serve chilled directly from the refrigerator.