Preheat oven to 350°F. Spray 9 out of the 12 cups in your muffin pan with non-stick cooking spray. Set aside.
Place puff pastry sheet on a piece of parchment paper. After you have let your puff pastry sheet thaw for a few minutes, cut out 9, 2 1/2 inch circles. I used a metal cookie cutter for this step.
Gently form a small bowl-like shape with each circle and then place into the muffin pan. Bake the 9, puff pastry "bowls" for 12 minutes at 350°F. While these are baking, start preparing your cream cheese mixture.
In your stand mixer, combine your cream cheese, sugar, vanilla extract, and pinch of salt. After removing muffin pan from the oven, spoon cream cheese mix into each small bowl. Add about a teaspoon amount of your favorite jam to the center of the cream cheese portion. Bake for another 15 minutes at 350°F.
Once puff pastry tarts have cooled in the muffin pan for a few minutes, gently remove them from pan. I did this by pushing down on one end of the tart with a spoon and lifting it out by the side that was sticking up.