In a mixing bowl, combine the graham cracker crumbs, melted butter, and granulated sugar. Mix until well combined. Press the mixture evenly into the bottom of a lined 9x9-inch baking pan. Set aside.
In a large mixing bowl, beat the softened cream cheese with an electric mixer until smooth. Add the creamy peanut butter, powdered sugar, and vanilla extract. Mix until fully combined and creamy.
In a separate bowl, whip the heavy cream until soft peaks form. Gently fold the whipped cream into the peanut butter mixture until no streaks remain.
Spread the cheesecake filling evenly over the graham cracker crust in the baking pan. Smooth the top with a spatula.
In a microwave-safe bowl, combine the semi-sweet chocolate chips and coconut oil. Heat in the microwave in 30-second intervals, stirring each time until fully melted and smooth.
Pour the melted chocolate over the cheesecake layer, spreading it evenly with a spatula.
Cover the baking pan with plastic wrap or foil and refrigerate for at least 3-4 hours, or until the bars are set.
Once the bars are set, remove them from the pan using the parchment paper. Cut into 12 equal bars and serve chilled.