Start with the topping, followed by the filling and lastly the shells right before serving.
Topping:
To a small saucepan add fresh or frozen strawberries and sugar.
Bring mixture to a boil (it will create its own juices) constantly stirring to get all of the strawberries soft (3-4 mins)
Combine 1 tablespoon of cornstarch with 1 tablespoon water. Mix well creating a slurry.
Pour into strawberry topping mixture and stir until smooth.
Increase the heat to bring mixture to a boil. Stir and remove to cool.
Filling:
Whisk or beat together cream cheese, lemon zest, vanilla and heavy cream until a soft peak forms.
Chill in the fridge for 30 mins and transfer to a piping bag.
Assembly:
Pipe cheesecake filling into each taco shell
Top with 1/2 tsp strawberry topping.
Sprinkle with graham cracker crumbs or powdered sugar.