STRAWBERRIES: Slice the strawberries down the center. To fill the strawberries generously, you can always hull out the center a bit with a paring knife, but this is optional.
WHIP: in a bowl, combine the softened cream cheese, 3 tablespoons heavy cream, powdered sugar, lemon zest, and vanilla. Whisk manually or use a hand mixer to combine until the ingredients are somewhat airy and pipeable. If the filling is too firm, you can add another tablespoon of cream, but you shouldn't need to.
FILL: Using a piping bag (with or without a nozzle) fill the cheesecake mixture inside the strawberries. Alternately, you can use a strong zip-top bag snipped at the corner if you didn’t have a piping bag. Place strawberries on a baking sheet and continue to fill remaining strawberries the same way.
TOP: Once the strawberries are filled, sprinkle with graham cracker crumbs and serve. If serving later, sprinkle with crumbs right before serving!