Preheat your oven to 350 degrees Fahrenheit. Line a 9x9 baking pan with aluminum foil and spray with a cooking spray.
In a food processor, place your graham cracker sheets and pulse until finely ground. Empty the graham cracker crumbs into a mixing bowl, add in your melted butter and sugar. Stir to combine. Press the graham cracker crumb mixture into the 9x9 pan and press down into an even layer. Bake in the preheated oven for 10 minutes.
In a second mixing bowl, combine the filling ingredients. Whisk to combine. Pour over the graham cracker crust and bake for an additional 15 minutes until set. Allow the bars to cool on a cooling rack before slicing. Bars can be refrigerated for up to 2 days, the crust may soften slightly however.
You can top with whipped cream, maybe a little toasted coconut, or just eat as is. No way is a bad way!