Make the Strawberry Sauce
To make the strawberry sauce, add the strawberry puree, sugar and vanilla extract to a medium saucepan. Cook over medium heat until it begins to boil, stirring occasionally.
Allow sauce to boil for one minutes, then remove from heat and seat aside to cool.
Make the Whipped Cream & Assemble the Trifle
When everything has cooled, make the whipped cream. Add the heavy whipping cream, powdered sugar and vanilla extract to a large mixer bowl and whip on high speed until stiff peaks form.
To layer everything in the trifle dish, add a layer of cake on the bottom, then about half of the chopped strawberries, about half of the strawberry sauce, then about half of the whipped cream.
Add a second layer of cake, strawberries and strawberry sauce, then pipe the remaining whipped cream on top in swirls. Add a few additional strawberries on top as decoration.
