Preheat the oven to 375°F (190°C).

Prepare the fillo cups: Arrange the mini fillo cups on a baking sheet in a single layer.

Heat olive oil in a small saucepan over medium heat.

Add the cranberries and cook until they begin to soften.

Reduce heat to low and add 1 cup water, letting the cranberries caramelize into a thick sauce.

Transfer to a mixing bowl to cool slightly.

Place one cube of brie cheese into each fillo cup.

Bake the tray in the oven until the brie melts, about 5–7 minutes.

Remove from the oven.

Spoon the cranberry sauce into each cup.

Garnish each with a sprig of thyme and one pecan.

Serve: Ready to enjoy warm!