1/2cupkey lime juice(look for Nellie & Joe's brand in the juice aisle)
pinch of salt
1cupheavy whipping cream
3regularkey limes,cut into thin slices and then cut in half
Preheat the oven to 350 degrees F. Spray an 8x8-inch pan with nonstick spray.
PREPARE THE CRUST:
In a medium bowl, combine the graham cracker crumbs, butter and sugar. Stir until well combined. Press the crust mixture into the prepared pan. Bake for 8 minutes.
PREPARE THE FILLING:
In a large bowl, use a mixer to combine the cream cheese, sweetened condensed milk, egg yolks, lime juice and salt; beat until well combined and smooth. Scrape the filling on top of the baked crust and smooth with a rubber spatula to make it even. Bake 15 to 20 minutes, or until the filling is set. Chill the cooked bars for at least 2 hours (or overnight).
ADD THE TOPPING:
In a medium bowl, use an electric mixer to whip the cream and sugar until the cream has thickened. Cut the bars into squares and move them to a serving platter. Spoon the whipped cream onto the bars and garnish with a piece of lime. Alternately, you can put the whipped cream into a piping bag and pipe it decoratively on top of each bar.