Step 1: Prepare the Crust

1. Preheat oven to 325°F (163°C). Line a 12-cup muffin tin with cupcake liners.
2. In a bowl, mix graham cracker crumbs, sugar, and melted butter until combined.
3. Divide mixture evenly into the muffin cups, pressing firmly to form a crust.
4. Bake for 5 minutes, then set aside to cool.

Step 2: Make the Cheesecake Filling

1. In a large bowl, beat cream cheese and sugar until smooth.
2. Add egg, egg yolk, heavy cream, vanilla, lemon juice, and salt, mixing until creamy.
3. Pour the filling evenly over the crusts, filling each about ¾ full.

Step 3: Bake the Cheesecakes

1. Bake at 325°F (163°C) for 18-20 minutes, or until centers are just set.
2. Let cool in the pan for 10 minutes, then transfer to the fridge to chill for at least 2 hours.

Step 4: Caramelize the Tops

1. Just before serving, sprinkle ½ teaspoon of sugar on each cheesecake.
2. Use a kitchen torch to melt and caramelize the sugar until golden and crackly.
   • If you don’t have a torch, broil in the oven for 1-2 minutes, watching carefully.
3. Let cool for a minute before serving.