Preheat Oven:
Preheat your oven to 325°F (163°C) and line a muffin tin with 12 paper cupcake liners.
Make the Crust:
In a bowl, mix graham cracker crumbs, sugar, and melted butter until the texture is like wet sand.
Press about 1 tablespoon of crust mixture into each liner and pack down firmly.
Bake for 5 minutes, then let cool while you prepare the filling.
Prepare the Cinnamon Swirl:
In a small bowl, mix brown sugar, cinnamon, and melted butter. Set aside.
Make Cheesecake Filling:
In a large mixing bowl, beat the softened cream cheese until smooth.
Add sugar and beat until combined.
Mix in eggs one at a time on low speed.
Stir in vanilla extract and sour cream until fully incorporated.
Assemble Cheesecakes:
Add a spoonful of cheesecake filling to each liner (about 1 tablespoon).
Drop a small dollop of the cinnamon swirl mixture on top and swirl gently with a toothpick.
Add more cheesecake filling to fill the liner nearly to the top and swirl again with more cinnamon mixture.
Bake:
Bake in the preheated oven for 18–22 minutes, or until centers are slightly jiggly but edges are set.
Remove and let cool to room temperature, then chill in the refrigerator for at least 3 hours or overnight.
Add Toppings (Optional):
Drizzle with cream cheese glaze and sprinkle a pinch of cinnamon just before serving.