Preheat the oven to 325°F. Line muffin tins with cupcake liners.
Melt 1 cup white chocolate chips in a microwave-safe bowl in 30‑second increments, stirring between each interval, until smooth. Set the melted white chocolate aside to cool to room temperature.
In a bowl, stir together 1½ cups mint Oreo cookie crumbles, 3/8 cup granulated sugar, and 3 tablespoons melted salted butter until evenly moistened.
Divide the crumb mixture among the lined muffin cups (about 1 tablespoon per cup). Press the crumbs firmly into the bottom of each cup to form a crust.
In a large bowl, beat 16 ounces softened cream cheese until smooth and fluffy.
Add 2/3 cup granulated sugar, 1 teaspoon peppermint extract, and 1 teaspoon vanilla extract to the cream cheese and beat until combined.
Beat in the cooled melted white chocolate and 1/2 cup sour cream until the filling is smooth.
Add the 2 eggs one at a time, mixing by hand or on low speed after each egg until just combined.
Add 1 to 2 drops gel-based green food coloring (start with 1 drop) and mix until the color is uniform.
Fold in 6 finely chopped mint Oreo cookies.
Spoon the cheesecake mixture over the packed crusts, filling each liner almost to the top.
Bake at 325°F for 20 minutes, until the cheesecakes are set and the tops are dry to the touch.
Cool the cheesecakes in the pan to room temperature (about 30 minutes), then refrigerate for 1 to 2 hours to chill completely.
To make the chocolate whipped cream, whip 2 cups heavy whipping cream with 4 tablespoons cocoa powder and 6 tablespoons powdered sugar until stiff peaks form.
Pipe or spoon the chocolate whipped cream onto each chilled mini cheesecake and top each one with an Andes mint for decorating.