Cream powdered sugar, vanilla, and salt with the heavy cream in the bowl of a stand mixer until stiff peaks, set aside.
Spread a thin layer of heavy cream mix in a 9x13 pan just to coat the bottom. Start layering the crackers, lemon curd, heavy cream mix and strawberries.
Repeat the layers so you have 3 layers of crackers and the top is the cream and strawberries.
Cover and refrigerate for a minimum of 8 hours or overnight until the graham crackers have softened completely.
When ready to serve, top with a few halved strawberries or whole strawberries and lemon zest if you desired. Serve chilled.