01 - Arrange half of the angel food cake cubes in an even layer in 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 the surface.
03 - Layer the remaining cake cubes on top of the strawberries, creating an even foundation for the next layer.
04 - Spread the remaining strawberry pie filling over the second layer of cake cubes.
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 gently to completely cover the cream layer.
08 - Sprinkle sliced almonds and fresh strawberries on top for decoration and texture, if desired.
09 - Cover and refrigerate for at least 2 hours, or overnight, to allow the dessert to set and flavors to meld.
10 - Slice into portions and serve chilled.