To prepare the Oreo crust, combine the blended Oreo crumbs with melted butter in a mixing bowl, stirring with a fork until well mixed.
Line a cupcake pan with liners. Press about a tablespoon of the Oreo mixture into the bottom of each cupcake liner, ensuring an even layer. Place the pan in the freezer while you make the cheesecake filling.
In a large mixing bowl, beat the cream cheese until smooth. Add the powdered sugar and blend again until fully combined and creamy.
Mix in the sour cream, vanilla, and lemon juice all at once, blending until the mixture is creamy and everything is well incorporated. Set aside.
Once thoroughly combined, pour in the chopped pecans and chocolate chips, folding those into the mixture evenly as well.
Spoon the no-bake cheesecake filling onto the now-firm Oreo crust, filling each cupcake liner to the top.
Refrigerate for at least 5 hours to set. After chilling, carefully remove each mini cheesecake from its liner and place it on a serving plate. Drizzle with caramel sauce, and garnish with extra chocolate chips and pecans. Serve and enjoy!