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, ensuring full coverage.
03 - Layer remaining cake cubes on top of strawberries, followed by remaining strawberry pie filling.
04 - Whisk cold milk and vanilla pudding mix in medium bowl until thickened, about 2 minutes. Fold in sour cream and vanilla extract until smooth and fully incorporated.
05 - Evenly spread pudding-sour cream mixture over cake and strawberry layers using spatula.
06 - Gently spread whipped topping over entire surface, covering completely.
07 - Sprinkle sliced almonds and fresh strawberry slices on top for visual appeal and texture.
08 - Cover and refrigerate for minimum 2 hours or overnight to allow flavors to meld and layers to set properly.
09 - Slice into portions and serve chilled.