Preheat the oven to 325°F (163°C). Line a 12-cup muffin tin with cupcake liners.
In a medium bowl, combine the graham cracker crumbs, sugar, and melted butter. Stir until the mixture is well combined and resembles wet sand.
Press about 1 tablespoon of the graham cracker mixture into the bottom of each muffin liner to form a crust. Use the back of a spoon to press it down firmly.
Bake the crusts in the preheated oven for 5 minutes, then remove from the oven and set aside to cool.
In a large bowl, beat the softened cream cheese and sugar until smooth and creamy, about 3-4 minutes.
Add the eggs, one at a time, mixing well after each addition. Stir in the vanilla extract and flour.
Gently fold in the chopped Andes mints, sour cream, and heavy cream (if using).
Spoon the cheesecake filling evenly into each muffin cup, over the cooled crusts.
Bake for 12-15 minutes, or until the centers are set but slightly jiggly. The edges should be lightly golden.
Remove from the oven and let the mini cheesecakes cool in the tin for 10 minutes. Then, transfer them to the fridge and chill for at least 2 hours, or until fully set.
Once chilled, top each mini cheesecake with additional chopped Andes mints. Serve and enjoy!