Preheat the oven to 375 degrees and spray two mini muffin tins with cooking spray.
Unfold the puff pastry onto a silicone mat or parchment paper. Use a rolling pin to roll out the pastry just a bit, smoothing the creases.
Cut the pastry into 25 squares, five cuts on each side. You can use a sharp knife or pizza cutter for this.
Press each square into the prepared muffin tins. (You'll have one extra you can sprinkle with cinnamon and sugar and bake on a tiny baking sheet for a little treat).
Top each puff pastry with about a ½ teaspoon of jam, followed by a spoonful of goat cheese crumbles. Bake for 15-17 minutes or until the puff pastry is turning golden on the edges.
Soon after the trays come out of the oven, remove the pastries to a serving plate or cooling rack. If any of them are sticking to the pan, use a small offset metal spatula to wedge them out. Top with thyme and serve warm or at room temperature.