Preheat your oven to 325°F (160°C). Line a muffin tin with cupcake liners.
In a mixing bowl, combine the graham cracker crumbs and melted butter. Mix until well combined and crumbly. Spoon a small amount of the mixture into the bottom of each cupcake liner and press down gently to form a base.
In another mixing bowl, beat the softened cream cheese and ½ cup granulated sugar until smooth and creamy.
Add sour cream, eggs, and vanilla bean paste. Beat the mixture on medium speed until fully combined and smooth.
Carefully pour the cheesecake mixture over the graham cracker crust in each cupcake liner, filling each about three-quarters full.
Bake in the preheated oven for 20-25 minutes, or until the edges are set but the center remains slightly jiggly.
Once baked, remove the mini cheesecakes from the oven and let them cool in the tin for 10 minutes. Then, carefully transfer them to a cooling rack to cool completely.
Once cooled, refrigerate the mini cheesecakes for at least 2 hours to set.
Before serving, sprinkle about 1 teaspoon of granulated sugar on top of each mini cheesecake. Using a kitchen torch, carefully caramelize the sugar until it forms a golden crust. Let it sit for a few minutes to harden.
Serve and enjoy your delicious mini cheesecake cupcakes!