Key Lime Bars

Preheat oven to 350° and grease an 8"-x-8” pan with cooking spray. Make crust: Add crushed graham crackers to a bowl with butter and sugar and mix until combined. Press tightly into prepared pan. Bake for 10 minutes. In a large bowl using a hand mixer, beat cream cheese until smooth. Add sweetened condensed milk, egg yolks, lime juice, and salt and beat until combined. Pour onto prepared crust and bake 15 to 20 minutes, until filling is completely set. Place in refrigerator to cool before slicing, at least 2 hours up to overnight.  Cut into squares and top with a dollop of whipped cream, lime zest, and a lime wedge.