01 - Preheat oven to 325°F. Line a standard 12-cup muffin tin with paper liners.
02 - In a medium bowl, combine graham cracker crumbs, melted butter, and sugar. Stir until the crumbs are evenly moistened and resemble wet sand.
03 - Divide the crumb mixture evenly among the 12 muffin cups, using about 1 tablespoon per cup. Press firmly into the bottoms using the back of a spoon to create a compact, even layer.
04 - In a large bowl, beat the cream cheese with an electric mixer until smooth and creamy. Add granulated sugar and continue beating until fully incorporated and lump-free.
05 - Mix in the egg, vanilla extract, and sour cream. Beat gently until just blended—avoid overmixing to prevent cracking during baking.
06 - Spoon the cheesecake batter evenly into the prepared crusts, filling each liner about three-quarters full.
07 - Bake for 18–20 minutes, until the centers are almost set with a slight jiggle. Remove from the oven promptly—do not overbake.
08 - Let the cheesecakes cool in the muffin tin for 10 minutes, then transfer to a wire rack to cool completely. Refrigerate for at least 1 hour before serving.
09 - Top each mini cheesecake with your choice of fresh berries, chocolate ganache, caramel sauce, whipped cream, or crushed cookies before serving.