01 - Combine sliced strawberries, granulated sugar, and lemon juice in a large bowl. Toss gently and let stand for 15–20 minutes until juicy.
02 - Beat cold heavy cream, powdered sugar, and vanilla extract in a mixing bowl until soft peaks form.
03 - Arrange half the cake cubes in the bottom of a large glass trifle dish or clear bowl.
04 - Spoon half of the macerated strawberries with their juices evenly over the cake layer.
05 - Spread half of the whipped cream over the strawberry layer.
06 - Layer remaining cake cubes, followed by remaining strawberries and juices, then finish with remaining whipped cream.
07 - Top with reserved strawberry slices or fresh mint leaves if desired.
08 - Refrigerate for at least 30 minutes before serving to allow flavors to meld.