Line a 9-inch square baking dish with parchment paper on the bottom and up the sides, leaving an overhang on two sides for easy removal. Lightly spray the parchment with nonstick cooking spray.
In a medium bowl, combine graham cracker crumbs and sugar. Add melted butter and mix with a fork until the crumbs are evenly coated and resemble wet sand.
Pour the crumb mixture into the prepared pan. Using your hand or the bottom of a flat measuring cup, press it firmly into an even layer.
Place the crust in the refrigerator to chill while preparing the filling.
In a large mixing bowl, beat cream cheese and sugar with a hand-held mixer on medium speed until smooth and creamy.
Add heavy cream and lemon juice. Beat for 1 to 2 minutes, or until the mixture is thickened and fluffy.
Spread the filling evenly over the chilled crust with an offset spatula or the back of a spoon.
Drop spoonfuls of apple butter over the top. Using a knife or skewer, gently swirl it into the filling, being careful not to disturb the crust below.
Cover and refrigerate for at least 6 hours, or overnight, until the cheesecake is firm and set.
Use the parchment overhang to lift the bars from the pan. Cut into squares and serve chilled.