Hull and slice the strawberries, placing half of the slices in a mixing bowl and sprinkling a tablespoon of sugar over them. Let sit for about 10 minutes to release their juices.
In another mixing bowl, combine heavy cream, powdered sugar, and vanilla extract. Whisk or use an electric mixer to beat until soft peaks form, taking care not to overwhip.
In a trifle dish or large glass bowl, layer the ingredients starting with a layer of sponge cake or ladyfingers at the bottom.
Spoon a layer of vanilla pudding or custard over the cake pieces.
Add a layer of the prepared strawberries, followed by a generous layer of whipped cream.
Repeat the layers (sponge cake, pudding, strawberries, and whipped cream) until you reach the top of the dish, finishing with a layer of whipped cream.
Garnish the top with the remaining strawberry slices and fresh mint leaves if desired.
Refrigerate the trifle for at least 1 hour before serving to allow the flavors to meld and the layers to set.
Serve and enjoy your delicious strawberry trifle!